Bug 1610896 (CVE-2018-14681)

Summary:	CVE-2018-14681 libmspack: out-of-bounds write in kwajd_read_headers in mspack/kwajd.c
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 10:34:49 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:	1610897, 1610898, 1610933, 1611551
Bug Blocks:	1610945

Description Laura Pardo 2018-08-01 14:53:45 UTC

An issue was discovered in kwajd_read_headers in mspack/kwajd.c in libmspack before 0.7alpha. A maliciously crafted KWAJ file header extensions could cause a one or two byte overwrite.


References:
http://openwall.com/lists/oss-security/2018/07/28/1
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=904799

Upstream patch:
https://github.com/kyz/libmspack/commit/0b0ef9344255ff5acfac6b7af09198ac9c9756c8

Comment 1 Laura Pardo 2018-08-01 14:54:10 UTC

Created libmspack tracking bugs for this issue:

Affects: fedora-all [bug 1610897]

Comment 3 Laura Pardo 2018-08-01 16:25:52 UTC

Created libmspack tracking bugs for this issue:

Affects: epel-all [bug 1610933]

Comment 4 Stefan Cornelius 2018-08-02 10:38:52 UTC

Statement:

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

Comment 6 errata-xmlrpc 2018-10-30 07:59:38 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