Bug 1708107 (CVE-2019-9721) - CVE-2019-9721 ffmpeg: complex format argument in handle_open_brace in libavcodec/htmlsubtitles.c causing denial of service
Summary: CVE-2019-9721 ffmpeg: complex format argument in handle_open_brace in libavco...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-9721
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20190312,reported=2...
Depends On:
Blocks: 1708110
TreeView+ depends on / blocked
 
Reported: 2019-05-09 07:29 UTC by Dhananjay Arunesh
Modified: 2019-05-14 15:44 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-05-14 15:44:24 UTC


Attachments (Terms of Use)

Description Dhananjay Arunesh 2019-05-09 07:29:30 UTC
A denial of service in the subtitle decoder in FFmpeg 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.

Upstream commit:
https://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff/894995c41e0795c7a44f81adc4838dedc3932e65

Comment 1 Stefan Cornelius 2019-05-14 15:44:27 UTC
Statement:

This issue did not affect the versions of qffmpeg as shipped with Red Hat Enterprise Linux 5.


Note You need to log in before you can comment on or make changes to this bug.