The mcrypt_create_iv function in ext/mcrypt/mcrypt.c in PHP before 4.4.7, 5.2.1,...
Vulnerability Description
The mcrypt_create_iv function in ext/mcrypt/mcrypt.c in PHP before 4.4.7, 5.2.1, and possibly 5.0.x and other PHP 5 versions, calls php_rand_r with an uninitialized seed variable and therefore always generates the same initialization vector (IV), which might allow context-dependent attackers to decrypt certain data more easily because of the guessable encryption keys.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.securityfocus.com/bid/23984
- http://www.fortheloot.com/public/mcrypt.patch
- http://cvs.php.net/viewvc.cgi/php-src/ext/mcrypt/mcrypt.c?r1=1.91.2.3.2.9&r2=1.91.2.3.2.10
- http://blog.php-security.org/archives/80-Watching-the-PHP-CVS.html
- http://www.php.net/ChangeLog-5.php
- http://bugs.php.net/bug.php?id=40999
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:187
- http://secunia.com/advisories/26895
- http://www.novell.com/linux/security/advisories/2007_15_sr.html
- http://osvdb.org/36087
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Affected Software
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.