Bug 1708097 (CVE-2019-9718) - CVE-2019-9718 ffmpeg: denial of service in subtitle decoder allows attackers to hog CPU via crafted video file
Summary: CVE-2019-9718 ffmpeg: denial of service in subtitle decoder allows attackers ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-9718
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:
Depends On:
Blocks: 1708110
TreeView+ depends on / blocked
 
Reported: 2019-05-09 07:15 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:58 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-05-14 15:44:26 UTC
Embargoed:

Attachments (Terms of Use)

Description Dhananjay Arunesh 2019-05-09 07:15:09 UTC 
In FFmpeg 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.

Upstream commit:
https://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff/1f00c97bc3475c477f3c468cf2d924d5761d0982?hp=7246bf365a1f2f12f1e7f1162aef8930924866dc
Comment 1 Stefan Cornelius 2019-05-14 15:44:29 UTC 
Statement:

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