National Cyber-Alert System
Vulnerability Summary for CVE-2007-2844
Original release date:05/24/2007
Last revised:11/06/2012
Source:
US-CERT/NIST
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):
Impact Subscore:
10.0
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
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
External Source: OSVDB
Name: 36088
External Source: MISC
Name: 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)
External Source: SECUNIA
Name: 25434