From 7e80b63ecd259d69d383623e75b318bf2bd491f6 Mon Sep 17 00:00:00 2001 From: "孙浩 and 张洪亮(望初)" Date: Fri, 25 Aug 2017 01:15:27 +0200 Subject: 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 --- libavformat/cinedec.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'libavformat') diff --git a/libavformat/cinedec.c b/libavformat/cinedec.c index 763b93ba2e..de34fb9638 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; } -- cgit v1.2.3