737 lines
27 KiB
Diff
737 lines
27 KiB
Diff
Copied from Debian.
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From ebea85358bc72ec20c53130d83acb93f95853b76 Mon Sep 17 00:00:00 2001
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From: Nicolas Williams <nico@twosigma.com>
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Date: Mon, 14 Sep 2015 12:28:36 -0400
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Subject: Fix IAKERB context aliasing bugs [CVE-2015-2696]
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The IAKERB mechanism currently replaces its context handle with the
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krb5 mechanism handle upon establishment, under the assumption that
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most GSS functions are only called after context establishment. This
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assumption is incorrect, and can lead to aliasing violations for some
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programs. Maintain the IAKERB context structure after context
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establishment and add new IAKERB entry points to refer to it with that
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type. Add initiate and established flags to the IAKERB context
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structure for use in gss_inquire_context() prior to context
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establishment.
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CVE-2015-2696:
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In MIT krb5 1.9 and later, applications which call
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gss_inquire_context() on a partially-established IAKERB context can
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cause the GSS-API library to read from a pointer using the wrong type,
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generally causing a process crash. Java server applications using the
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native JGSS provider are vulnerable to this bug. A carefully crafted
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IAKERB packet might allow the gss_inquire_context() call to succeed
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with attacker-determined results, but applications should not make
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access control decisions based on gss_inquire_context() results prior
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to context establishment.
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CVSSv2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C/E:POC/RL:OF/RC:C
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[ghudson@mit.edu: several bugfixes, style changes, and edge-case
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behavior changes; commit message and CVE description]
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ticket: 8244
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target_version: 1.14
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tags: pullup
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(cherry picked from commit e04f0283516e80d2f93366e0d479d13c9b5c8c2a)
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Patch-Category: upstream
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---
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src/lib/gssapi/krb5/gssapiP_krb5.h | 114 ++++++++++++
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src/lib/gssapi/krb5/gssapi_krb5.c | 105 +++++++++--
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src/lib/gssapi/krb5/iakerb.c | 351 +++++++++++++++++++++++++++++++++----
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3 files changed, 529 insertions(+), 41 deletions(-)
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diff --git a/src/lib/gssapi/krb5/gssapiP_krb5.h b/src/lib/gssapi/krb5/gssapiP_krb5.h
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index a0e8625..05dc321 100644
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--- a/src/lib/gssapi/krb5/gssapiP_krb5.h
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+++ b/src/lib/gssapi/krb5/gssapiP_krb5.h
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@@ -620,6 +620,21 @@ OM_uint32 KRB5_CALLCONV krb5_gss_accept_sec_context_ext
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);
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#endif /* LEAN_CLIENT */
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+OM_uint32 KRB5_CALLCONV krb5_gss_inquire_sec_context_by_oid
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+(OM_uint32*, /* minor_status */
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+ const gss_ctx_id_t,
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+ /* context_handle */
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+ const gss_OID, /* desired_object */
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+ gss_buffer_set_t* /* data_set */
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+);
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+
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+OM_uint32 KRB5_CALLCONV krb5_gss_set_sec_context_option
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+(OM_uint32*, /* minor_status */
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+ gss_ctx_id_t*, /* context_handle */
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+ const gss_OID, /* desired_object */
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+ const gss_buffer_t/* value */
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+);
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+
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OM_uint32 KRB5_CALLCONV krb5_gss_process_context_token
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(OM_uint32*, /* minor_status */
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gss_ctx_id_t, /* context_handle */
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@@ -1301,6 +1316,105 @@ OM_uint32 KRB5_CALLCONV
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krb5_gss_import_cred(OM_uint32 *minor_status, gss_buffer_t token,
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gss_cred_id_t *cred_handle);
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_process_context_token(OM_uint32 *minor_status,
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+ const gss_ctx_id_t context_handle,
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+ const gss_buffer_t token_buffer);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_context_time(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ OM_uint32 *time_rec);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_inquire_context(OM_uint32 *minor_status,
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+ gss_ctx_id_t context_handle, gss_name_t *src_name,
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+ gss_name_t *targ_name, OM_uint32 *lifetime_rec,
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+ gss_OID *mech_type, OM_uint32 *ctx_flags,
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+ int *locally_initiated, int *opened);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_get_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ gss_qop_t qop_req, gss_buffer_t message_buffer,
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+ gss_buffer_t message_token);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_get_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ gss_qop_t qop_req, gss_iov_buffer_desc *iov,
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+ int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_get_mic_iov_length(OM_uint32 *minor_status,
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+ gss_ctx_id_t context_handle, gss_qop_t qop_req,
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+ gss_iov_buffer_desc *iov, int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_verify_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ gss_buffer_t msg_buffer, gss_buffer_t token_buffer,
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+ gss_qop_t *qop_state);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_verify_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ gss_qop_t *qop_state, gss_iov_buffer_desc *iov,
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+ int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_wrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ int conf_req_flag, gss_qop_t qop_req,
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+ gss_buffer_t input_message_buffer, int *conf_state,
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+ gss_buffer_t output_message_buffer);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_wrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ int conf_req_flag, gss_qop_t qop_req, int *conf_state,
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+ gss_iov_buffer_desc *iov, int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_wrap_iov_length(OM_uint32 *minor_status,
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+ gss_ctx_id_t context_handle, int conf_req_flag,
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+ gss_qop_t qop_req, int *conf_state,
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+ gss_iov_buffer_desc *iov, int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_unwrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ gss_buffer_t input_message_buffer,
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+ gss_buffer_t output_message_buffer, int *conf_state,
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+ gss_qop_t *qop_state);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_unwrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ int *conf_state, gss_qop_t *qop_state,
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+ gss_iov_buffer_desc *iov, int iov_count);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_wrap_size_limit(OM_uint32 *minor_status,
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+ gss_ctx_id_t context_handle, int conf_req_flag,
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+ gss_qop_t qop_req, OM_uint32 req_output_size,
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+ OM_uint32 *max_input_size);
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+
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+#ifndef LEAN_CLIENT
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_export_sec_context(OM_uint32 *minor_status,
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+ gss_ctx_id_t *context_handle,
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+ gss_buffer_t interprocess_token);
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+#endif /* LEAN_CLIENT */
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_inquire_sec_context_by_oid(OM_uint32 *minor_status,
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+ const gss_ctx_id_t context_handle,
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+ const gss_OID desired_object,
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+ gss_buffer_set_t *data_set);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_set_sec_context_option(OM_uint32 *minor_status,
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+ gss_ctx_id_t *context_handle,
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+ const gss_OID desired_object,
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+ const gss_buffer_t value);
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+
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+OM_uint32 KRB5_CALLCONV
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+iakerb_gss_pseudo_random(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
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+ int prf_key, const gss_buffer_t prf_in,
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+ ssize_t desired_output_len, gss_buffer_t prf_out);
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+
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/* Magic string to identify exported krb5 GSS credentials. Increment this if
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* the format changes. */
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#define CRED_EXPORT_MAGIC "K5C1"
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diff --git a/src/lib/gssapi/krb5/gssapi_krb5.c b/src/lib/gssapi/krb5/gssapi_krb5.c
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index 77b7fff..9a23656 100644
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--- a/src/lib/gssapi/krb5/gssapi_krb5.c
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+++ b/src/lib/gssapi/krb5/gssapi_krb5.c
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@@ -345,7 +345,7 @@ static struct {
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}
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};
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-static OM_uint32 KRB5_CALLCONV
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+OM_uint32 KRB5_CALLCONV
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krb5_gss_inquire_sec_context_by_oid (OM_uint32 *minor_status,
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const gss_ctx_id_t context_handle,
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const gss_OID desired_object,
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@@ -459,7 +459,7 @@ static struct {
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};
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#endif
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-static OM_uint32 KRB5_CALLCONV
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+OM_uint32 KRB5_CALLCONV
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krb5_gss_set_sec_context_option (OM_uint32 *minor_status,
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gss_ctx_id_t *context_handle,
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const gss_OID desired_object,
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@@ -904,20 +904,103 @@ static struct gss_config krb5_mechanism = {
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krb5_gss_get_mic_iov_length,
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};
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+/* Functions which use security contexts or acquire creds are IAKERB-specific;
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+ * other functions can borrow from the krb5 mech. */
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+static struct gss_config iakerb_mechanism = {
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+ { GSS_MECH_KRB5_OID_LENGTH, GSS_MECH_KRB5_OID },
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+ NULL,
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+ iakerb_gss_acquire_cred,
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+ krb5_gss_release_cred,
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+ iakerb_gss_init_sec_context,
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+#ifdef LEAN_CLIENT
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+ NULL,
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+#else
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+ iakerb_gss_accept_sec_context,
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+#endif
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+ iakerb_gss_process_context_token,
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+ iakerb_gss_delete_sec_context,
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+ iakerb_gss_context_time,
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+ iakerb_gss_get_mic,
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+ iakerb_gss_verify_mic,
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+#if defined(IOV_SHIM_EXERCISE_WRAP) || defined(IOV_SHIM_EXERCISE)
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+ NULL,
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+#else
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+ iakerb_gss_wrap,
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+#endif
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+#if defined(IOV_SHIM_EXERCISE_UNWRAP) || defined(IOV_SHIM_EXERCISE)
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+ NULL,
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+#else
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+ iakerb_gss_unwrap,
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+#endif
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+ krb5_gss_display_status,
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+ krb5_gss_indicate_mechs,
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+ krb5_gss_compare_name,
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+ krb5_gss_display_name,
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+ krb5_gss_import_name,
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+ krb5_gss_release_name,
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+ krb5_gss_inquire_cred,
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+ NULL, /* add_cred */
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+#ifdef LEAN_CLIENT
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+ NULL,
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+ NULL,
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+#else
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+ iakerb_gss_export_sec_context,
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+ NULL,
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+#endif
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+ krb5_gss_inquire_cred_by_mech,
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+ krb5_gss_inquire_names_for_mech,
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+ iakerb_gss_inquire_context,
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+ krb5_gss_internal_release_oid,
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+ iakerb_gss_wrap_size_limit,
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+ krb5_gss_localname,
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+ krb5_gss_authorize_localname,
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+ krb5_gss_export_name,
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+ krb5_gss_duplicate_name,
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+ krb5_gss_store_cred,
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+ iakerb_gss_inquire_sec_context_by_oid,
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+ krb5_gss_inquire_cred_by_oid,
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+ iakerb_gss_set_sec_context_option,
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+ krb5_gssspi_set_cred_option,
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+ krb5_gssspi_mech_invoke,
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+ NULL, /* wrap_aead */
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+ NULL, /* unwrap_aead */
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+ iakerb_gss_wrap_iov,
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+ iakerb_gss_unwrap_iov,
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+ iakerb_gss_wrap_iov_length,
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+ NULL, /* complete_auth_token */
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+ NULL, /* acquire_cred_impersonate_name */
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+ NULL, /* add_cred_impersonate_name */
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+ NULL, /* display_name_ext */
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+ krb5_gss_inquire_name,
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+ krb5_gss_get_name_attribute,
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+ krb5_gss_set_name_attribute,
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+ krb5_gss_delete_name_attribute,
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+ krb5_gss_export_name_composite,
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+ krb5_gss_map_name_to_any,
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+ krb5_gss_release_any_name_mapping,
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+ iakerb_gss_pseudo_random,
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+ NULL, /* set_neg_mechs */
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+ krb5_gss_inquire_saslname_for_mech,
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+ krb5_gss_inquire_mech_for_saslname,
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+ krb5_gss_inquire_attrs_for_mech,
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+ krb5_gss_acquire_cred_from,
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+ krb5_gss_store_cred_into,
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+ iakerb_gss_acquire_cred_with_password,
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+ krb5_gss_export_cred,
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+ krb5_gss_import_cred,
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+ NULL, /* import_sec_context_by_mech */
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+ NULL, /* import_name_by_mech */
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+ NULL, /* import_cred_by_mech */
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+ iakerb_gss_get_mic_iov,
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+ iakerb_gss_verify_mic_iov,
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+ iakerb_gss_get_mic_iov_length,
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+};
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+
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#ifdef _GSS_STATIC_LINK
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#include "mglueP.h"
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static int gss_iakerbmechglue_init(void)
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{
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struct gss_mech_config mech_iakerb;
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- struct gss_config iakerb_mechanism = krb5_mechanism;
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-
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- /* IAKERB mechanism mirrors krb5, but with different context SPIs */
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- iakerb_mechanism.gss_accept_sec_context = iakerb_gss_accept_sec_context;
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- iakerb_mechanism.gss_init_sec_context = iakerb_gss_init_sec_context;
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- iakerb_mechanism.gss_delete_sec_context = iakerb_gss_delete_sec_context;
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- iakerb_mechanism.gss_acquire_cred = iakerb_gss_acquire_cred;
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- iakerb_mechanism.gssspi_acquire_cred_with_password
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- = iakerb_gss_acquire_cred_with_password;
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memset(&mech_iakerb, 0, sizeof(mech_iakerb));
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mech_iakerb.mech = &iakerb_mechanism;
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diff --git a/src/lib/gssapi/krb5/iakerb.c b/src/lib/gssapi/krb5/iakerb.c
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index f30de32..4662bd9 100644
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--- a/src/lib/gssapi/krb5/iakerb.c
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+++ b/src/lib/gssapi/krb5/iakerb.c
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@@ -47,6 +47,8 @@ struct _iakerb_ctx_id_rec {
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gss_ctx_id_t gssc;
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krb5_data conv; /* conversation for checksumming */
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unsigned int count; /* number of round trips */
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+ int initiate;
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+ int established;
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krb5_get_init_creds_opt *gic_opts;
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};
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@@ -695,7 +697,7 @@ cleanup:
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* Allocate and initialise an IAKERB context
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*/
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static krb5_error_code
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-iakerb_alloc_context(iakerb_ctx_id_t *pctx)
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+iakerb_alloc_context(iakerb_ctx_id_t *pctx, int initiate)
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{
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iakerb_ctx_id_t ctx;
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krb5_error_code code;
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@@ -709,6 +711,8 @@ iakerb_alloc_context(iakerb_ctx_id_t *pctx)
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ctx->magic = KG_IAKERB_CONTEXT;
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ctx->state = IAKERB_AS_REQ;
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ctx->count = 0;
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+ ctx->initiate = initiate;
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+ ctx->established = 0;
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code = krb5_gss_init_context(&ctx->k5c);
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if (code != 0)
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@@ -732,7 +736,7 @@ iakerb_gss_delete_sec_context(OM_uint32 *minor_status,
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gss_ctx_id_t *context_handle,
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gss_buffer_t output_token)
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{
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- OM_uint32 major_status = GSS_S_COMPLETE;
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+ iakerb_ctx_id_t iakerb_ctx = (iakerb_ctx_id_t)*context_handle;
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if (output_token != GSS_C_NO_BUFFER) {
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output_token->length = 0;
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@@ -740,23 +744,10 @@ iakerb_gss_delete_sec_context(OM_uint32 *minor_status,
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}
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*minor_status = 0;
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+ *context_handle = GSS_C_NO_CONTEXT;
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+ iakerb_release_context(iakerb_ctx);
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- if (*context_handle != GSS_C_NO_CONTEXT) {
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- iakerb_ctx_id_t iakerb_ctx = (iakerb_ctx_id_t)*context_handle;
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-
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- if (iakerb_ctx->magic == KG_IAKERB_CONTEXT) {
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- iakerb_release_context(iakerb_ctx);
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- *context_handle = GSS_C_NO_CONTEXT;
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- } else {
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- assert(iakerb_ctx->magic == KG_CONTEXT);
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-
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- major_status = krb5_gss_delete_sec_context(minor_status,
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- context_handle,
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- output_token);
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- }
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- }
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-
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- return major_status;
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+ return GSS_S_COMPLETE;
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}
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static krb5_boolean
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@@ -802,7 +793,7 @@ iakerb_gss_accept_sec_context(OM_uint32 *minor_status,
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int initialContextToken = (*context_handle == GSS_C_NO_CONTEXT);
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if (initialContextToken) {
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- code = iakerb_alloc_context(&ctx);
|
|
+ code = iakerb_alloc_context(&ctx, 0);
|
|
if (code != 0)
|
|
goto cleanup;
|
|
|
|
@@ -854,11 +845,8 @@ iakerb_gss_accept_sec_context(OM_uint32 *minor_status,
|
|
time_rec,
|
|
delegated_cred_handle,
|
|
&exts);
|
|
- if (major_status == GSS_S_COMPLETE) {
|
|
- *context_handle = ctx->gssc;
|
|
- ctx->gssc = NULL;
|
|
- iakerb_release_context(ctx);
|
|
- }
|
|
+ if (major_status == GSS_S_COMPLETE)
|
|
+ ctx->established = 1;
|
|
if (mech_type != NULL)
|
|
*mech_type = (gss_OID)gss_mech_krb5;
|
|
}
|
|
@@ -897,7 +885,7 @@ iakerb_gss_init_sec_context(OM_uint32 *minor_status,
|
|
int initialContextToken = (*context_handle == GSS_C_NO_CONTEXT);
|
|
|
|
if (initialContextToken) {
|
|
- code = iakerb_alloc_context(&ctx);
|
|
+ code = iakerb_alloc_context(&ctx, 1);
|
|
if (code != 0) {
|
|
*minor_status = code;
|
|
goto cleanup;
|
|
@@ -983,11 +971,8 @@ iakerb_gss_init_sec_context(OM_uint32 *minor_status,
|
|
ret_flags,
|
|
time_rec,
|
|
&exts);
|
|
- if (major_status == GSS_S_COMPLETE) {
|
|
- *context_handle = ctx->gssc;
|
|
- ctx->gssc = GSS_C_NO_CONTEXT;
|
|
- iakerb_release_context(ctx);
|
|
- }
|
|
+ if (major_status == GSS_S_COMPLETE)
|
|
+ ctx->established = 1;
|
|
if (actual_mech_type != NULL)
|
|
*actual_mech_type = (gss_OID)gss_mech_krb5;
|
|
} else {
|
|
@@ -1010,3 +995,309 @@ cleanup:
|
|
|
|
return major_status;
|
|
}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_unwrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ gss_buffer_t input_message_buffer,
|
|
+ gss_buffer_t output_message_buffer, int *conf_state,
|
|
+ gss_qop_t *qop_state)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_unwrap(minor_status, ctx->gssc, input_message_buffer,
|
|
+ output_message_buffer, conf_state, qop_state);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_wrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ int conf_req_flag, gss_qop_t qop_req,
|
|
+ gss_buffer_t input_message_buffer, int *conf_state,
|
|
+ gss_buffer_t output_message_buffer)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_wrap(minor_status, ctx->gssc, conf_req_flag, qop_req,
|
|
+ input_message_buffer, conf_state,
|
|
+ output_message_buffer);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_process_context_token(OM_uint32 *minor_status,
|
|
+ const gss_ctx_id_t context_handle,
|
|
+ const gss_buffer_t token_buffer)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_DEFECTIVE_TOKEN;
|
|
+
|
|
+ return krb5_gss_process_context_token(minor_status, ctx->gssc,
|
|
+ token_buffer);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_context_time(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ OM_uint32 *time_rec)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_context_time(minor_status, ctx->gssc, time_rec);
|
|
+}
|
|
+
|
|
+#ifndef LEAN_CLIENT
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_export_sec_context(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t *context_handle,
|
|
+ gss_buffer_t interprocess_token)
|
|
+{
|
|
+ OM_uint32 maj;
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ /* We don't currently support exporting partially established contexts. */
|
|
+ if (!ctx->established)
|
|
+ return GSS_S_UNAVAILABLE;
|
|
+
|
|
+ maj = krb5_gss_export_sec_context(minor_status, &ctx->gssc,
|
|
+ interprocess_token);
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT) {
|
|
+ iakerb_release_context(ctx);
|
|
+ *context_handle = GSS_C_NO_CONTEXT;
|
|
+ }
|
|
+ return maj;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Until we implement partial context exports, there are no SPNEGO exported
|
|
+ * context tokens, only tokens for the underlying krb5 context. So we do not
|
|
+ * need to implement an iakerb_gss_import_sec_context() yet; it would be
|
|
+ * unreachable except via a manually constructed token.
|
|
+ */
|
|
+
|
|
+#endif /* LEAN_CLIENT */
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_inquire_context(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t context_handle, gss_name_t *src_name,
|
|
+ gss_name_t *targ_name, OM_uint32 *lifetime_rec,
|
|
+ gss_OID *mech_type, OM_uint32 *ctx_flags,
|
|
+ int *initiate, int *opened)
|
|
+{
|
|
+ OM_uint32 ret;
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (src_name != NULL)
|
|
+ *src_name = GSS_C_NO_NAME;
|
|
+ if (targ_name != NULL)
|
|
+ *targ_name = GSS_C_NO_NAME;
|
|
+ if (lifetime_rec != NULL)
|
|
+ *lifetime_rec = 0;
|
|
+ if (mech_type != NULL)
|
|
+ *mech_type = (gss_OID)gss_mech_iakerb;
|
|
+ if (ctx_flags != NULL)
|
|
+ *ctx_flags = 0;
|
|
+ if (initiate != NULL)
|
|
+ *initiate = ctx->initiate;
|
|
+ if (opened != NULL)
|
|
+ *opened = ctx->established;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_COMPLETE;
|
|
+
|
|
+ ret = krb5_gss_inquire_context(minor_status, ctx->gssc, src_name,
|
|
+ targ_name, lifetime_rec, mech_type,
|
|
+ ctx_flags, initiate, opened);
|
|
+
|
|
+ if (!ctx->established) {
|
|
+ /* Report IAKERB as the mech OID until the context is established. */
|
|
+ if (mech_type != NULL)
|
|
+ *mech_type = (gss_OID)gss_mech_iakerb;
|
|
+
|
|
+ /* We don't support exporting partially-established contexts. */
|
|
+ if (ctx_flags != NULL)
|
|
+ *ctx_flags &= ~GSS_C_TRANS_FLAG;
|
|
+ }
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_wrap_size_limit(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t context_handle, int conf_req_flag,
|
|
+ gss_qop_t qop_req, OM_uint32 req_output_size,
|
|
+ OM_uint32 *max_input_size)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_wrap_size_limit(minor_status, ctx->gssc, conf_req_flag,
|
|
+ qop_req, req_output_size, max_input_size);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_get_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ gss_qop_t qop_req, gss_buffer_t message_buffer,
|
|
+ gss_buffer_t message_token)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_get_mic(minor_status, ctx->gssc, qop_req, message_buffer,
|
|
+ message_token);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_verify_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ gss_buffer_t msg_buffer, gss_buffer_t token_buffer,
|
|
+ gss_qop_t *qop_state)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_verify_mic(minor_status, ctx->gssc, msg_buffer,
|
|
+ token_buffer, qop_state);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_inquire_sec_context_by_oid(OM_uint32 *minor_status,
|
|
+ const gss_ctx_id_t context_handle,
|
|
+ const gss_OID desired_object,
|
|
+ gss_buffer_set_t *data_set)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_UNAVAILABLE;
|
|
+
|
|
+ return krb5_gss_inquire_sec_context_by_oid(minor_status, ctx->gssc,
|
|
+ desired_object, data_set);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_set_sec_context_option(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t *context_handle,
|
|
+ const gss_OID desired_object,
|
|
+ const gss_buffer_t value)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)*context_handle;
|
|
+
|
|
+ if (ctx == NULL || ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_UNAVAILABLE;
|
|
+
|
|
+ return krb5_gss_set_sec_context_option(minor_status, &ctx->gssc,
|
|
+ desired_object, value);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_wrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ int conf_req_flag, gss_qop_t qop_req, int *conf_state,
|
|
+ gss_iov_buffer_desc *iov, int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_wrap_iov(minor_status, ctx->gssc, conf_req_flag, qop_req,
|
|
+ conf_state, iov, iov_count);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_unwrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ int *conf_state, gss_qop_t *qop_state,
|
|
+ gss_iov_buffer_desc *iov, int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_unwrap_iov(minor_status, ctx->gssc, conf_state, qop_state,
|
|
+ iov, iov_count);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_wrap_iov_length(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t context_handle, int conf_req_flag,
|
|
+ gss_qop_t qop_req, int *conf_state,
|
|
+ gss_iov_buffer_desc *iov, int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_wrap_iov_length(minor_status, ctx->gssc, conf_req_flag,
|
|
+ qop_req, conf_state, iov, iov_count);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_pseudo_random(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ int prf_key, const gss_buffer_t prf_in,
|
|
+ ssize_t desired_output_len, gss_buffer_t prf_out)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_pseudo_random(minor_status, ctx->gssc, prf_key, prf_in,
|
|
+ desired_output_len, prf_out);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_get_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ gss_qop_t qop_req, gss_iov_buffer_desc *iov,
|
|
+ int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_get_mic_iov(minor_status, ctx->gssc, qop_req, iov,
|
|
+ iov_count);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_verify_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
|
|
+ gss_qop_t *qop_state, gss_iov_buffer_desc *iov,
|
|
+ int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_verify_mic_iov(minor_status, ctx->gssc, qop_state, iov,
|
|
+ iov_count);
|
|
+}
|
|
+
|
|
+OM_uint32 KRB5_CALLCONV
|
|
+iakerb_gss_get_mic_iov_length(OM_uint32 *minor_status,
|
|
+ gss_ctx_id_t context_handle, gss_qop_t qop_req,
|
|
+ gss_iov_buffer_desc *iov, int iov_count)
|
|
+{
|
|
+ iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
|
|
+
|
|
+ if (ctx->gssc == GSS_C_NO_CONTEXT)
|
|
+ return GSS_S_NO_CONTEXT;
|
|
+
|
|
+ return krb5_gss_get_mic_iov_length(minor_status, ctx->gssc, qop_req, iov,
|
|
+ iov_count);
|
|
+}
|