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authorMing Liu <ming.liu@windriver.com>2013-11-21 01:05:05 -0600
committerRichard Purdie <richard.purdie@linuxfoundation.org>2013-11-22 13:39:59 +0000
commitf1721553a873b242bc26ad3e4d618aea39dfd507 (patch)
tree50e021eb7bc3a8a67fc90135975ef50f30c40788
parentb7a8daf52c9befc773f320e54999bb91efdac334 (diff)
downloadopenembedded-core-f1721553a873b242bc26ad3e4d618aea39dfd507.tar.gz
gst-ffmpeg: fix CVE-2013-3674
The cdg_decode_frame function in cdgraphics.c in libavcodec in FFmpeg before 1.2.1 does not validate the presence of non-header data in a buffer, which allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) via crafted CD Graphics Video data. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-3674 Signed-off-by: Ming Liu <ming.liu@windriver.com> Signed-off-by: Jeff Polk <jeff.polk@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/gst-ffmpeg-CVE-2013-3674.patch26
-rw-r--r--meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb3
2 files changed, 28 insertions, 1 deletions
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/gst-ffmpeg-CVE-2013-3674.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/gst-ffmpeg-CVE-2013-3674.patch
new file mode 100644
index 0000000000..a28404b072
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/gst-ffmpeg-CVE-2013-3674.patch
@@ -0,0 +1,26 @@
+avcodec/cdgraphics: check buffer size before use
+
+Fixes out of array accesses
+
+Backported from:http://git.videolan.org/?p=ffmpeg.git;a=commit;h=ad002e1a13a8df934bd6cb2c84175a4780ab8942
+
+Upstream-status: Backport
+
+Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
+Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
+Signed-off-by: Ming Liu <ming.liu@windriver.com>
+
+diff -urpN a/gst-libs/ext/libav/libavcodec/cdgraphics.c b/gst-libs/ext/libav/libavcodec/cdgraphics.c
+--- a/gst-libs/ext/libav/libavcodec/cdgraphics.c 2013-07-18 13:17:08.399876575 +0800
++++ b/gst-libs/ext/libav/libavcodec/cdgraphics.c 2013-07-18 13:18:05.880502267 +0800
+@@ -291,7 +291,9 @@ static int cdg_decode_frame(AVCodecConte
+ inst = bytestream_get_byte(&buf);
+ inst &= CDG_MASK;
+ buf += 2; /// skipping 2 unneeded bytes
+- bytestream_get_buffer(&buf, cdg_data, buf_size - CDG_HEADER_SIZE);
++
++ if (buf_size > CDG_HEADER_SIZE)
++ bytestream_get_buffer(&buf, cdg_data, buf_size - CDG_HEADER_SIZE);
+
+ if ((command & CDG_MASK) == CDG_COMMAND) {
+ switch (inst) {
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
index 8873105049..e1257a2697 100644
--- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
@@ -22,12 +22,13 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
file://h264_qpel_mmx.patch \
file://libav_e500mc.patch \
file://libav_e5500.patch \
+ file://gst-ffmpeg-CVE-2013-3674.patch \
"
SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"
SRC_URI[sha256sum] = "76fca05b08e00134e3cb92fa347507f42cbd48ddb08ed3343a912def187fbb62"
-PR = "r7"
+PR = "r8"
GSTREAMER_DEBUG ?= "--disable-debug"