GLSA 200803-24: PCRE: Buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	PCRE: Buffer overflow
Date:	03/17/2008
Bugs:	#209067, #209293
ID:	200803-24

Synopsis

A buffer overflow vulnerability has been discovered in PCRE, allowing for the execution of arbitrary code and Denial of Service.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/libpcre	< 7.6-r1	>= 7.6-r1	All supported architectures
dev-libs/glib	< 2.14.6	>= 2.14.6	All supported architectures

Description

PCRE contains a buffer overflow vulnerability when processing a character class containing a very large number of characters with codepoints greater than 255.

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-7.6-r1"

All GLib users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/glib-2.14.6"

References

CVE-2008-0674

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200803-24.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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.