ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue May 30 21:29:20 2017 +0200| [a5d849b149ca67ced2d271dc84db0bc95a548abb] | committer: Michael Niedermayer
avformat/avidec: Limit formats in gab2 to srt and ass/ssa This prevents part of one exploit leading to an information leak Found-by: Emil Lerner and Pavel Cheremushkin Reported-by: Thierry Foucu <tfo...@google.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a5d849b149ca67ced2d271dc84db0bc95a548abb --- libavformat/avidec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/avidec.c b/libavformat/avidec.c index b6ef0ac62d..df52092067 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -1099,6 +1099,9 @@ static int read_gab2_sub(AVFormatContext *s, AVStream *st, AVPacket *pkt) if (!sub_demuxer) goto error; + if (strcmp(sub_demuxer->name, "srt") && strcmp(sub_demuxer->name, "ass")) + goto error; + if (!(ast->sub_ctx = avformat_alloc_context())) goto error; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
