From c48b8fed25c6f9bca95bbae9f85e333be70a6ee0 Mon Sep 17 00:00:00 2001 From: Leo Famulari Date: Sat, 24 Apr 2021 13:56:56 -0400 Subject: [PATCH] gnu: gst-plugins-good: Fix CVE-2021-3497 and CVE-2021-3498. * gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch, gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/gstreamer.scm (gst-plugins-good)[source]: Use them. --- gnu/local.mk | 2 + gnu/packages/gstreamer.scm | 4 +- .../gst-plugins-good-CVE-2021-3497.patch | 174 ++++++++++++++++++ .../gst-plugins-good-CVE-2021-3498.patch | 22 +++ 4 files changed, 201 insertions(+), 1 deletion(-) create mode 100644 gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch create mode 100644 gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch diff --git a/gnu/local.mk b/gnu/local.mk index c4d757bc89..ed3f0d48f7 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1170,6 +1170,8 @@ dist_patch_DATA = \ %D%/packages/patches/grub-verifiers-Blocklist-fallout-cleanup.patch \ %D%/packages/patches/gspell-dash-test.patch \ %D%/packages/patches/gst-plugins-good-fix-test.patch \ + %D%/packages/patches/gst-plugins-good-CVE-2021-3497.patch \ + %D%/packages/patches/gst-plugins-good-CVE-2021-3498.patch \ %D%/packages/patches/guile-1.8-cpp-4.5.patch \ %D%/packages/patches/guile-2.2-skip-oom-test.patch \ %D%/packages/patches/guile-2.2-skip-so-test.patch \ diff --git a/gnu/packages/gstreamer.scm b/gnu/packages/gstreamer.scm index 6a4e14167d..6a050ca297 100644 --- a/gnu/packages/gstreamer.scm +++ b/gnu/packages/gstreamer.scm @@ -591,7 +591,9 @@ for the GStreamer multimedia library.") (string-append "https://gstreamer.freedesktop.org/src/" name "/" name "-" version ".tar.xz")) - (patches (search-patches "gst-plugins-good-fix-test.patch")) + (patches (search-patches "gst-plugins-good-fix-test.patch" + "gst-plugins-good-CVE-2021-3497.patch" + "gst-plugins-good-CVE-2021-3498.patch")) (sha256 (base32 "1929nhjsvbl4bw37nfagnfsnxz737cm2x3ayz9ayrn9lwkfm45zp")))) (build-system meson-build-system) diff --git a/gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch b/gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch new file mode 100644 index 0000000000..c8c3ee6cf1 --- /dev/null +++ b/gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch @@ -0,0 +1,174 @@ +Fix CVE-2021-3497: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3497 +https://gstreamer.freedesktop.org/security/sa-2021-0002.html + +Patch copied from upstream source repository: + +https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/commit/9181191511f9c0be6a89c98b311f49d66bd46dc3?merge_request_iid=903 + +diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c +index 467815986c8c3d86fd8906a0d539b34f67d6693e..0e47ee7b5e25ac3331f30439710ae755235f2a22 100644 +--- a/gst/matroska/matroska-demux.c ++++ b/gst/matroska/matroska-demux.c +@@ -3851,6 +3851,12 @@ gst_matroska_demux_add_wvpk_header (GstElement * element, + guint32 block_samples, tmp; + gsize size = gst_buffer_get_size (*buf); + ++ if (size < 4) { ++ GST_ERROR_OBJECT (element, "Too small wavpack buffer"); ++ gst_buffer_unmap (*buf, &map); ++ return GST_FLOW_ERROR; ++ } ++ + gst_buffer_extract (*buf, 0, &tmp, sizeof (guint32)); + block_samples = GUINT32_FROM_LE (tmp); + /* we need to reconstruct the header of the wavpack block */ +@@ -3858,10 +3864,10 @@ gst_matroska_demux_add_wvpk_header (GstElement * element, + /* -20 because ck_size is the size of the wavpack block -8 + * and lace_size is the size of the wavpack block + 12 + * (the three guint32 of the header that already are in the buffer) */ +- wvh.ck_size = size + sizeof (Wavpack4Header) - 20; ++ wvh.ck_size = size + WAVPACK4_HEADER_SIZE - 20; + + /* block_samples, flags and crc are already in the buffer */ +- newbuf = gst_buffer_new_allocate (NULL, sizeof (Wavpack4Header) - 12, NULL); ++ newbuf = gst_buffer_new_allocate (NULL, WAVPACK4_HEADER_SIZE - 12, NULL); + + gst_buffer_map (newbuf, &outmap, GST_MAP_WRITE); + data = outmap.data; +@@ -3886,9 +3892,11 @@ gst_matroska_demux_add_wvpk_header (GstElement * element, + audiocontext->wvpk_block_index += block_samples; + } else { + guint8 *outdata = NULL; +- guint outpos = 0; +- gsize buf_size, size, out_size = 0; ++ gsize buf_size, size; + guint32 block_samples, flags, crc, blocksize; ++ GstAdapter *adapter; ++ ++ adapter = gst_adapter_new (); + + gst_buffer_map (*buf, &map, GST_MAP_READ); + buf_data = map.data; +@@ -3897,6 +3905,7 @@ gst_matroska_demux_add_wvpk_header (GstElement * element, + if (buf_size < 4) { + GST_ERROR_OBJECT (element, "Too small wavpack buffer"); + gst_buffer_unmap (*buf, &map); ++ g_object_unref (adapter); + return GST_FLOW_ERROR; + } + +@@ -3918,59 +3927,57 @@ gst_matroska_demux_add_wvpk_header (GstElement * element, + data += 4; + size -= 4; + +- if (blocksize == 0 || size < blocksize) +- break; +- +- g_assert ((newbuf == NULL) == (outdata == NULL)); ++ if (blocksize == 0 || size < blocksize) { ++ GST_ERROR_OBJECT (element, "Too small wavpack buffer"); ++ gst_buffer_unmap (*buf, &map); ++ g_object_unref (adapter); ++ return GST_FLOW_ERROR; ++ } + +- if (newbuf == NULL) { +- out_size = sizeof (Wavpack4Header) + blocksize; +- newbuf = gst_buffer_new_allocate (NULL, out_size, NULL); ++ g_assert (newbuf == NULL); + +- gst_buffer_copy_into (newbuf, *buf, +- GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS, 0, -1); ++ newbuf = ++ gst_buffer_new_allocate (NULL, WAVPACK4_HEADER_SIZE + blocksize, ++ NULL); ++ gst_buffer_map (newbuf, &outmap, GST_MAP_WRITE); ++ outdata = outmap.data; ++ ++ outdata[0] = 'w'; ++ outdata[1] = 'v'; ++ outdata[2] = 'p'; ++ outdata[3] = 'k'; ++ outdata += 4; ++ ++ GST_WRITE_UINT32_LE (outdata, blocksize + WAVPACK4_HEADER_SIZE - 8); ++ GST_WRITE_UINT16_LE (outdata + 4, wvh.version); ++ GST_WRITE_UINT8 (outdata + 6, wvh.track_no); ++ GST_WRITE_UINT8 (outdata + 7, wvh.index_no); ++ GST_WRITE_UINT32_LE (outdata + 8, wvh.total_samples); ++ GST_WRITE_UINT32_LE (outdata + 12, wvh.block_index); ++ GST_WRITE_UINT32_LE (outdata + 16, block_samples); ++ GST_WRITE_UINT32_LE (outdata + 20, flags); ++ GST_WRITE_UINT32_LE (outdata + 24, crc); ++ outdata += 28; ++ ++ memcpy (outdata, data, blocksize); + +- outpos = 0; +- gst_buffer_map (newbuf, &outmap, GST_MAP_WRITE); +- outdata = outmap.data; +- } else { +- gst_buffer_unmap (newbuf, &outmap); +- out_size += sizeof (Wavpack4Header) + blocksize; +- gst_buffer_set_size (newbuf, out_size); +- gst_buffer_map (newbuf, &outmap, GST_MAP_WRITE); +- outdata = outmap.data; +- } ++ gst_buffer_unmap (newbuf, &outmap); ++ gst_adapter_push (adapter, newbuf); ++ newbuf = NULL; + +- outdata[outpos] = 'w'; +- outdata[outpos + 1] = 'v'; +- outdata[outpos + 2] = 'p'; +- outdata[outpos + 3] = 'k'; +- outpos += 4; +- +- GST_WRITE_UINT32_LE (outdata + outpos, +- blocksize + sizeof (Wavpack4Header) - 8); +- GST_WRITE_UINT16_LE (outdata + outpos + 4, wvh.version); +- GST_WRITE_UINT8 (outdata + outpos + 6, wvh.track_no); +- GST_WRITE_UINT8 (outdata + outpos + 7, wvh.index_no); +- GST_WRITE_UINT32_LE (outdata + outpos + 8, wvh.total_samples); +- GST_WRITE_UINT32_LE (outdata + outpos + 12, wvh.block_index); +- GST_WRITE_UINT32_LE (outdata + outpos + 16, block_samples); +- GST_WRITE_UINT32_LE (outdata + outpos + 20, flags); +- GST_WRITE_UINT32_LE (outdata + outpos + 24, crc); +- outpos += 28; +- +- memmove (outdata + outpos, data, blocksize); +- outpos += blocksize; + data += blocksize; + size -= blocksize; + } + gst_buffer_unmap (*buf, &map); +- gst_buffer_unref (*buf); + +- if (newbuf) +- gst_buffer_unmap (newbuf, &outmap); ++ newbuf = gst_adapter_take_buffer (adapter, gst_adapter_available (adapter)); ++ g_object_unref (adapter); + ++ gst_buffer_copy_into (newbuf, *buf, ++ GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS, 0, -1); ++ gst_buffer_unref (*buf); + *buf = newbuf; ++ + audiocontext->wvpk_block_index += block_samples; + } + +diff --git a/gst/matroska/matroska-ids.h b/gst/matroska/matroska-ids.h +index 429213f778063ba0063944ab64ad60373bbce5ee..8d4a685a910ec13100a3c3d156b2412d28ec0522 100644 +--- a/gst/matroska/matroska-ids.h ++++ b/gst/matroska/matroska-ids.h +@@ -688,6 +688,8 @@ typedef struct _Wavpack4Header { + guint32 crc; /* crc for actual decoded data */ + } Wavpack4Header; + ++#define WAVPACK4_HEADER_SIZE (32) ++ + typedef enum { + GST_MATROSKA_TRACK_ENCODING_SCOPE_FRAME = (1<<0), + GST_MATROSKA_TRACK_ENCODING_SCOPE_CODEC_DATA = (1<<1), diff --git a/gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch b/gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch new file mode 100644 index 0000000000..50eb42f126 --- /dev/null +++ b/gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch @@ -0,0 +1,22 @@ +Fix CVE-2021-3498: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3498 +https://gstreamer.freedesktop.org/security/sa-2021-0003.html + +Patch copied from upstream source repository: + +https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/commit/02174790726dd20a5c73ce2002189bf240ad4fe0?merge_request_iid=903 + +diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c +index 4d0234743b8cf243b4521e56ef9027ba23b1b5d0..467815986c8c3d86fd8906a0d539b34f67d6693e 100644 +--- a/gst/matroska/matroska-demux.c ++++ b/gst/matroska/matroska-demux.c +@@ -692,6 +692,8 @@ gst_matroska_demux_parse_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml, + + DEBUG_ELEMENT_START (demux, ebml, "TrackEntry"); + ++ *dest_context = NULL; ++ + /* start with the master */ + if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { + DEBUG_ELEMENT_STOP (demux, ebml, "TrackEntry", ret);