Bug 1687837 (CVE-2018-20546)

Summary:	CVE-2018-20546 libcaca: out of bounds read in function get_rgba_default in caca/dither.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	matthias, negativo17, pahan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:50:36 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1687858, 1687860
Bug Blocks:

Description Dhananjay Arunesh 2019-03-12 13:21:13 UTC

There is an illegal READ memory access at caca/dither.c (function  get_rgba_default) in libcaca 0.99.beta19 for the default bpp case.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1652622
https://github.com/cacalabs/libcaca/issues/38

Upstream commit:
https://github.com/cacalabs/libcaca/commit/02a09ec9e5ed8981e7a810bfb6a0172dc24f0790

Comment 1 Dhananjay Arunesh 2019-03-12 13:47:54 UTC

Created libcaca tracking bugs for this issue:

Affects: fedora-all [bug 1687858]

Comment 2 Dhananjay Arunesh 2019-03-12 13:48:58 UTC

Created libcaca tracking bugs for this issue:

Affects: epel-all [bug 1687860]

Comment 3 Product Security DevOps Team 2019-06-10 10:50:36 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.