GLSA 200703-21: PHP: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	PHP: Multiple vulnerabilities
Date:	03/20/2007
Bugs:	#153911
ID:	200703-21

Synopsis

PHP contains several vulnerabilities including a heap buffer overflow, potentially leading to the remote execution of arbitrary code under certain conditions.

Background

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-lang/php	< 5.2.1-r3	>= 5.2.1-r3	All supported architectures

Description

Several vulnerabilities were found in PHP by the Hardened-PHP Project and other researchers. These vulnerabilities include a heap-based buffer overflow in htmlentities() and htmlspecialchars() if called with UTF-8 parameters, and an off-by-one error in str_ireplace(). Other vulnerabilities were also found in the PHP4 branch, including possible overflows, stack corruptions and a format string vulnerability in the *print() functions on 64 bit systems.

Impact

Remote attackers might be able to exploit these issues in PHP applications making use of the affected functions, potentially resulting in the execution of arbitrary code, Denial of Service, execution of scripted contents in the context of the affected site, security bypass or information leak.

Workaround

There is no known workaround at this time.

Resolution

All PHP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose "dev-lang/php"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-21.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.