Bug 953722 – CVE-2013-1969 libxml2: multiple use-after-free flaws

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 953722 - (CVE-2013-1969) CVE-2013-1969 libxml2: multiple use-after-free flaws

Summary:	CVE-2013-1969 libxml2: multiple use-after-free flaws

Status:	CLOSED NOTABUG

Aliases:	CVE-2013-1969

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=important,public=20121214,repo...
Keywords:	Security

Depends On:
Blocks:	953723
	Show dependency tree / graph

Reported:	2013-04-18 23:36 EDT by Vincent Danen
Modified:	2016-03-04 05:46 EST (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	libxml2 2.9.1
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-07-24 08:01:10 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Vincent Danen 2013-04-18 23:36:40 EDT

Multiple use-after-free flaws were reported [1] in libxml2 2.9.0, which could be used to cause a denial of service or, possibly, the execution of arbitrary code by the privileges of the user running an application linked to libxml2.

1) A use-after-free error in the "htmlParseChunk()" function can be exploited to dereference already freed memory.

2) Two use-after-free errors in the "xmldecl_done()" function can be exploited to dereference already freed memory.

These issues have been fixed in git [2].  Based on the bug report, the implication is that these flaws were introduced in version 2.9.0 (this has not yet been verified though).


[1] https://bugzilla.gnome.org/show_bug.cgi?id=690202
[2] https://git.gnome.org/browse/libxml2/commit/?id=de0cc20c29cb3f056062925395e0f68d2250a46f

Comment 2 Stefan Cornelius 2013-04-30 09:56:42 EDT

Statement:

This issue does not affect the version of libxml2 as shipped with Red Hat Enterprise Linux 5 and 6. This issue does not affect version of mingw32-libxml2 as shipped with Red Hat Enterprise Linux 5 and 6.

Comment 3 Stefan Cornelius 2013-07-24 08:01:10 EDT

These issues were introduced in version 2.9.0 and subsequently fixed in version 2.9.1.

Note You need to log in before you can comment on or make changes to this bug.