Bug 1831712 (CVE-2020-12284)

Summary:	CVE-2020-12284 ffmpeg: heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check in libavcodec/cbs_jpeg.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	kem
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
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Clone Of:		Environment:
Last Closed:	2020-05-07 07:47:20 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1831714

Description Dhananjay Arunesh 2020-05-05 14:17:37 UTC

A vulnerability was found in incbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.2.2 has a heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check.

References:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734
https://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726