GLSA 200803-20: International Components for Unicode: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	International Components for Unicode: Multiple vulnerabilities
Date:	03/11/2008
Bugs:	#208001
ID:	200803-20

Synopsis

Two vulnerabilities have been discovered in the International Components for Unicode, possibly resulting in the remote execution of arbitrary code or a Denial of Service.

Background

International Components for Unicode is a set of C/C++ and Java libraries providing Unicode and Globalization support for software applications.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/icu	< 3.8.1-r1	>= 3.8.1-r1	All supported architectures

Description

Will Drewry (Google Security) reported a vulnerability in the regular expression engine when using back references to capture \0 characters (CVE-2007-4770). He also found that the backtracking stack size is not limited, possibly allowing for a heap-based buffer overflow (CVE-2007-4771).

Impact

A remote attacker could submit specially crafted regular expressions to an application using the library, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application or a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All International Components for Unicode users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/icu-3.8.1-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200803-20.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.