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| author | 孙浩 and 张洪亮(望初) <tony.sh and wangchu.zhl@alibaba-inc.com> | 2017-08-25 01:15:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-17 12:21:32 +0200 |
| commit | 98e177c7288574b336d80618f4ec5d1f94243070 (patch) | |
| tree | fdcf6c01587262bc55aba4aa15f41216f1178bc6 | |
| parent | f94517934bf0ff2510f472fa2bc4cd362951109c (diff) | |
| download | ffmpeg-98e177c7288574b336d80618f4ec5d1f94243070.tar.gz | |
avformat/cinedec: Fix DoS due to lack of eof check
Fixes: loop.cine
Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7e80b63ecd259d69d383623e75b318bf2bd491f6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/cinedec.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavformat/cinedec.c b/libavformat/cinedec.c index 32cccf566b..c615d4fc49 100644 --- a/libavformat/cinedec.c +++ b/libavformat/cinedec.c @@ -267,8 +267,12 @@ static int cine_read_header(AVFormatContext *avctx) /* parse image offsets */ avio_seek(pb, offImageOffsets, SEEK_SET); - for (i = 0; i < st->duration; i++) + for (i = 0; i < st->duration; i++) { + if (avio_feof(pb)) + return AVERROR_INVALIDDATA; + av_add_index_entry(st, avio_rl64(pb), i, 0, 0, AVINDEX_KEYFRAME); + } return 0; } |