Bug 711027 (CVE-2011-2188)

Summary:	CVE-2011-2188 lua-expat: Prone to XML "billion laughs attack"
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CANTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	tim
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Upstream: luaexpat-1.2.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-10-11 22:36:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	711029
Bug Blocks:

Description Jan Lieskovsky 2011-06-06 09:43:25 UTC

It was found that LuaExpat, a SAX XML parser based on the Expat library,
is prone to XML "billion laughs attack", as described in:
[1] http://www.ibm.com/developerworks/xml/library/x-tipcfsx/index.html#N100F1

A remote attacker could provide a specially-crafted XML file, which
once opened in an application, linked against LuaExpat, could cause
that application to crash.

References:
[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629225
[3] http://matthewwild.co.uk/projects/luaexpat/luaexpat-1.2.0.tar.gz

Comment 1 Jan Lieskovsky 2011-06-06 09:47:39 UTC

The updates for lua-expat package, as shipped with Fedora release of 14 and 15,
and as shipped within EPEL-5 and EPEL-6 repositories, addressing this issue,
has been already scheduled. Relevant name-version-releases of those are:
1) lua-expat-1.2.0-1.fc14 for F-14,
2) lua-expat-1.2.0-1.fc15 for F-15,
3) lua-expat-1.2.0-1.el5 for EPEL-5,
4) lua-expat-1.2.0-1.el6 for EPEL-6.

This issue affects the version of the lua-expat package, as shipped with
Fedora release of 13. Please schedule an update.

Comment 2 Jan Lieskovsky 2011-06-06 09:48:37 UTC

Created lua-expat tracking bugs for this issue

Affects: fedora-13 [bug 711029]

Comment 3 Jan Lieskovsky 2011-06-06 09:51:30 UTC

CVE request:
[4] http://www.openwall.com/lists/oss-security/2011/06/06/4

Comment 4 Jan Lieskovsky 2011-06-07 08:59:05 UTC

The CVE identifier of CVE-2011-2188 has been assigned to this issue:
http://www.openwall.com/lists/oss-security/2011/06/06/19

Comment 5 Tim Niemueller 2011-10-11 22:36:24 UTC

F-13 is EOL so closing.