National Cyber-Alert System

Vulnerability Summary for CVE-2007-2844

Overview

PHP 4.x and 5.x before 5.2.1, when running on multi-threaded systems, does not ensure thread safety for libc crypt function calls using protection schemes such as a mutex, which creates race conditions that allow remote attackers to overwrite internal program memory and gain system access.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Vendor Statments (disclaimer)

Official Statement from Red Hat (05/29/2007)

Not vulnerable. PHP is not built or supported in a multi-threaded environment in the packages distributed in Red Hat Enterprise Linux or Application Stack.

References to Advisories, Solutions, and Tools

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External Source: BID

Name: 24109

Hyperlink:http://www.securityfocus.com/bid/24109

External Source: MISC

Name: http://blog.php-security.org/archives/82-Suhosin-0.9.20-and-crypt-Thread-Safety-Vulnerability.html

Hyperlink:http://blog.php-security.org/archives/82-Suhosin-0.9.20-and-crypt-Thread-Safety-Vulnerability.html

External Source: XF

Name: php-crypt-authentication-bypass(34601)

Hyperlink:http://xforce.iss.net/xforce/xfdb/34601

External Source: SECUNIA

Name: 25434

Hyperlink:http://secunia.com/advisories/25434