wrapper/FFmpeg
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

avformat/rmdec: Fix DoS due to lack of eof check

Browse source 
Fixes: loop.ivr

Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 124eb202e7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
孙浩 and 张洪亮(望初) 2017-08-25 01:15:28 +02:00 • committed by Michael Niedermayer
parent 98e177c728
commit 2bbef8ee27
1 changed files with 4 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
libavformat/rmdec.c
View file

@ -1238,8 +1238,11 @@ static int ivr_read_header(AVFormatContext *s)
av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
} else if (type == 4) {
av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
for (j = 0; j < len; j++)
for (j = 0; j < len; j++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
}
av_log(s, AV_LOG_DEBUG, "'\n");
} else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
nb_streams = value = avio_rb32(pb);