f9ada7fdc4
* gnu/packages/connman.scm (connman)[source]: Add patches. * gnu/packages/patches/connman-CVE-2022-32292.patch, gnu/packages/patches/connman-CVE-2022-32293-pt1.patch, gnu/packages/patches/connman-CVE-2022-32293-pt1.patch: New files. * gnu/local.mk (dist_patch_DATA): Register them.
34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
https://git.kernel.org/pub/scm/network/connman/connman.git/patch/?id=d1a5ede5d255bde8ef707f8441b997563b9312bd
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From d1a5ede5d255bde8ef707f8441b997563b9312bd Mon Sep 17 00:00:00 2001
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From: Nathan Crandall <ncrandall@tesla.com>
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Date: Tue, 12 Jul 2022 08:56:34 +0200
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Subject: gweb: Fix OOB write in received_data()
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There is a mismatch of handling binary vs. C-string data with memchr
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and strlen, resulting in pos, count, and bytes_read to become out of
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sync and result in a heap overflow. Instead, do not treat the buffer
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as an ASCII C-string. We calculate the count based on the return value
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of memchr, instead of strlen.
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Fixes: CVE-2022-32292
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---
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gweb/gweb.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/gweb/gweb.c b/gweb/gweb.c
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index 12fcb1d8..13c6c5f2 100644
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--- a/gweb/gweb.c
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+++ b/gweb/gweb.c
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@@ -918,7 +918,7 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
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}
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*pos = '\0';
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- count = strlen((char *) ptr);
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+ count = pos - ptr;
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if (count > 0 && ptr[count - 1] == '\r') {
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ptr[--count] = '\0';
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bytes_read--;
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--
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cgit
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