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ffmpeg2.7243
0001-avformat-mov-Fix-DoS-in-read_tfra.patch
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File 0001-avformat-mov-Fix-DoS-in-read_tfra.patch of Package ffmpeg2.7243
From d9cf9f5af82228b588828ae2692acccec588fdac Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <michael@niedermayer.cc> Date: Tue, 5 Sep 2017 00:16:29 +0200 Subject: [PATCH] avformat/mov: Fix DoS in read_tfra() Fixes: Missing EOF check in loop No testcase Found-by: Xiaohei and Wangchu from Alibaba Security Team Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 9cb4eb772839c5e1de2855d126bf74ff16d13382) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/mov.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 6b1cee8d6c..90b068f091 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5873,6 +5873,13 @@ static int read_tfra(MOVContext *mov, AVIOContext *f) } for (i = 0; i < index->item_count; i++) { int64_t time, offset; + + if (avio_feof(f)) { + index->item_count = 0; + av_freep(&index->items); + return AVERROR_INVALIDDATA; + } + if (version == 1) { time = avio_rb64(f); offset = avio_rb64(f); -- 2.14.1
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