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gst-ffmpeg: fix for Security Advisory CVE-2013-0852

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The parse_picture_segment function in libavcodec/pgssubdec.c in FFmpeg
before 1.1 allows remote attackers to have an unspecified impact via
crafted RLE data, which triggers an out-of-bounds array access.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0852

(From OE-Core rev: 37f9371b44bd914fdd64e4c4e4448a2908512203)

Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Yue Tao
2014-04-27 15:37:10 +08:00
committed by Richard Purdie
parent 35773420b4
commit 0255fd5917
2 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-pgssubdec-check-RLE-size-before-copying.-Fix-out-of-.patch Normal file
View File

@@ -0,0 +1,34 @@
From 28bf685bfc6d0c744369cdf367f61a78d80d0b01 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 15 Nov 2012 16:41:28 +0100
Subject: [PATCH] pgssubdec: check RLE size before copying. Fix out of array
accesses
Upstream-Status: Backport
Commit 28bf685bfc6d0c744369cdf367f61a78d80d0b01 release/1.1
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c0d68be555f5858703383040e04fcd6529777061)
---
libavcodec/pgssubdec.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c
index 728f178..26a3c2a 100644
--- a/gst-libs/ext/libav/libavcodec/pgssubdec.c
+++ b/gst-libs/ext/libav/libavcodec/pgssubdec.c
@@ -202,6 +202,11 @@ static int parse_picture_segment(AVCodec
return -1;
}
+ if (buf_size > rle_bitmap_len) {
+ av_log(avctx, AV_LOG_ERROR, "too much RLE data\n");
+ return AVERROR_INVALIDDATA;
+ }
+
ctx->picture.w = width;
ctx->picture.h = height;
--

1
meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
View File

@@ -29,6 +29,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
file://0001-huffyuvdec-Skip-len-0-cases.patch \ file://0001-huffyuvdec-Skip-len-0-cases.patch \
file://0001-huffyuvdec-Check-init_vlc-return-codes.patch \ file://0001-huffyuvdec-Check-init_vlc-return-codes.patch \
file://0001-alsdec-check-block-length.patch \ file://0001-alsdec-check-block-length.patch \
file://0001-pgssubdec-check-RLE-size-before-copying.-Fix-out-of-.patch \
" "
SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4" SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"