Bug 1610941 (CVE-2018-14682)

Summary:	CVE-2018-14682 libmspack: off-by-one error in the TOLOWER() macro for CHM decompression
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dan, rjones
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libmspack 0.7alpha	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:34:53 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:	1610942, 1610943, 1610944, 1611553
Bug Blocks:	1610945

Description Laura Pardo 2018-08-01 16:33:41 UTC

An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the TOLOWER() macro for CHM decompression.


References:
http://www.openwall.com/lists/oss-security/2018/07/26/1 	
https://bugs.debian.org/904800

Upstream Patch:
https://github.com/kyz/libmspack/commit/4fd9ccaa54e1aebde1e4b95fb0163b699fd7bcc8

Comment 1 Laura Pardo 2018-08-01 16:34:35 UTC

Created libmspack tracking bugs for this issue:

Affects: epel-all [bug 1610944]
Affects: fedora-all [bug 1610942]

Comment 3 Stefan Cornelius 2018-08-02 10:38:38 UTC

Statement:

This issue affects the versions of libmspack as shipped with Red Hat Enterprise Linux 7.

Comment 5 errata-xmlrpc 2018-10-30 07:59:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3327 https://access.redhat.com/errata/RHSA-2018:3327