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avformat/mov: Check creation_time for overflow

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Fixes integer overflow
Fixes: 701640

Found-by: Found-by: Thomas Guilbert <tguilbert@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 39ee3ddff87a12e108fc4e0d36f756d0ca080472)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-04-01 19:18:36 +02:00
parent 0a6598536c
commit 502313dd50
1 changed files with 6 additions and 0 deletions
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6
libavformat/mov.c
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@ -1182,6 +1182,12 @@ static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
if (time) {
if(time >= 2082844800)
time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
if ((int64_t)(time * 1000000ULL) / 1000000 != time) {
av_log(NULL, AV_LOG_DEBUG, "creation_time is not representable\n");
return;
}
avpriv_dict_set_timestamp(metadata, "creation_time", time * 1000000);
}
}