Bug 801738 (CVE-2012-1152)

Summary:	CVE-2012-1152 perl-YAML-LibYAML: Multiple format string flaws by reporting errors during YAML document load
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	mmaslano, perl-devel, tremble
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-07-25 17:19:28 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:	836924
Bug Blocks:	801749

Description Jan Lieskovsky 2012-03-09 10:24:03 UTC

Multiple format string flaws were found in the way perl-YAML-LibYAML, Perl YAML serialization using XS and libyaml, performed:
1) error reporting by loading of general YAML stream,
2) error reporting by loading of YAML node,
3) error reporting by loading of YAML mapping into a Perl hash, and
4) error reporting by loading of YAML sequence into a Perl array.

A remote attacker could provide a specially-crafted YAML document, which once processed by the perl-YAML-LibYAML interface would lead to perl-YAML-LibYAML based process crash.

References:
[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=661548

CPAN tickets:
[2] https://rt.cpan.org/Public/Bug/Display.html?id=75365
[3] https://rt.cpan.org/Public/Bug/Display.html?id=46507

Proposed patch:
[4] https://rt.cpan.org/Ticket/Attachment/920541/477607/YAML-LibYAML-0.35-format-error.patch

Comment 1 Jan Lieskovsky 2012-03-09 10:27:41 UTC

This issue affects the version perl-YAML-LibYAML package, as shipped with Fedora EPEL 6.

--

This issue affects the versions of the perl-YAML-LibYAML package, as shipped with Fedora release of 15 and 16.

Comment 2 Jan Lieskovsky 2012-03-09 11:12:12 UTC

CVE Request:
[5] http://www.openwall.com/lists/oss-security/2012/03/09/6

Comment 3 Kurt Seifried 2012-03-10 06:11:25 UTC

Added CVE as per http://www.openwall.com/lists/oss-security/2012/03/10/4

Comment 4 Fedora Update System 2012-04-08 03:28:04 UTC

perl-YAML-LibYAML-0.38-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2012-04-08 03:30:50 UTC

perl-YAML-LibYAML-0.38-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2012-04-12 03:07:03 UTC

perl-YAML-LibYAML-0.38-2.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Huzaifa S. Sidhpurwala 2012-07-02 07:54:45 UTC

Created perl-YAML-LibYAML tracking bugs for this issue

Affects: epel-6 [bug 836924]

Comment 8 Fedora Update System 2012-07-21 00:22:08 UTC

perl-YAML-LibYAML-0.38-3.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.