Bug 1985253 (CVE-2021-37220)

Summary:	CVE-2021-37220 mupdf: out-of-bounds write because the cached color converter does not properly consider the maximum key size of a hash table
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	mjg
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Last Closed:	2021-07-23 09:55:11 UTC	Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1985254
Bug Blocks:

Description Marian Rehak 2021-07-23 09:04:21 UTC

MuPDF through 1.18.1 has an out-of-bounds write because the cached color converter does not properly consider the maximum key size of a hash table. This can, for example, be seen with crafted "mutool draw" input.

Reference:

https://bugs.ghostscript.com/show_bug.cgi?id=703791
http://git.ghostscript.com/?p=mupdf.git;h=f5712c9949d026e4b891b25837edd2edc166151f

Comment 1 Marian Rehak 2021-07-23 09:04:57 UTC

Created mupdf tracking bugs for this issue:

Affects: fedora-all [bug 1985254]

Comment 2 Product Security DevOps Team 2021-07-23 09:55:11 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.