[gentoo-announce] [ GLSA 200807-03 ] PCRE: Buffer overflow

[news 28]

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Gentoo Linux Security Advisory GLSA 200807-03

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http://security.gentoo.org/

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Severity: High

Title: PCRE: Buffer overflow

Date: July 07, 2008

Bugs: #228091, #230039

ID: 200807-03

 

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Synopsis

========

 

A buffer overflow vulnerability has been discovered in PCRE, allowing

for the execution of arbitrary code and a Denial of Service.

 

Background

==========

 

PCRE is a Perl-compatible regular expression library. GLib includes a

copy of PCRE.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 dev-libs/libpcre < 7.7-r1 >= 7.7-r1

2 dev-libs/glib < 2.16.3-r1 >= 2.16.3-r1

< 2.14.0

-------------------------------------------------------------------

2 affected packages on all of their supported architectures.

-------------------------------------------------------------------

 

Description

===========

 

Tavis Ormandy of the Google Security team reported a heap-based buffer

overflow when compiling regular expression patterns containing

"Internal Option Settings" such as "(?i)".

 

Impact

======

 

A remote attacker could exploit this vulnerability by sending a

specially crafted regular expression to an application making use of

the PCRE library, which could possibly lead to the execution of

arbitrary code or a Denial of Service.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All PCRE users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=dev-libs/libpcre-7.7-r1"

 

All GLib users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=dev-libs/glib-2.16.3-r1"

 

References

==========

 

[ 1 ] CVE-2008-2371

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2371

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200807-03.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5