ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Fri Aug 25 01:15:30 2017 +0200| [6b004e23d7fcdd3c69717bc12e6dcc070ab563b2] | committer: Michael Niedermayer
avformat/mvdec: Fix DoS due to lack of eof check Fixes: loop.mv Found-by: Xiaohei and Wangchu from Alibaba Security Team Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 4f05e2e2dc1a89f38cd9f0960a6561083d714f1e) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6b004e23d7fcdd3c69717bc12e6dcc070ab563b2 --- libavformat/mvdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 7aa6452f66..e3feda6687 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -338,6 +338,8 @@ static int mv_read_header(AVFormatContext *avctx) uint32_t pos = avio_rb32(pb); uint32_t asize = avio_rb32(pb); uint32_t vsize = avio_rb32(pb); + if (avio_feof(pb)) + return AVERROR_INVALIDDATA; avio_skip(pb, 8); av_add_index_entry(ast, pos, timestamp, asize, 0, AVINDEX_KEYFRAME); av_add_index_entry(vst, pos + asize, i, vsize, 0, AVINDEX_KEYFRAME); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog