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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | 4.4.0 (including) | 4.4.7 (excluding) |
| Php | Php | 5.0.0 (including) | 5.2.2 (excluding) |
| Php | Php | 4.0.1 (including) | 4.0.1 (including) |
| Php | Php | 4.0.1-patch1 (including) | 4.0.1-patch1 (including) |
| Php | Php | 4.0.1-patch2 (including) | 4.0.1-patch2 (including) |
| Php | Php | 4.0.2 (including) | 4.0.2 (including) |
| Php | Php | 4.0.3 (including) | 4.0.3 (including) |
| Php | Php | 4.0.3-patch1 (including) | 4.0.3-patch1 (including) |
| Php | Php | 4.0.4 (including) | 4.0.4 (including) |
| Php | Php | 4.0.5 (including) | 4.0.5 (including) |
| Php | Php | 4.0.6 (including) | 4.0.6 (including) |
| Php | Php | 4.0.7 (including) | 4.0.7 (including) |
| Php | Php | 4.0.7-rc1 (including) | 4.0.7-rc1 (including) |
| Php | Php | 4.0.7-rc2 (including) | 4.0.7-rc2 (including) |
| Php | Php | 4.0.7-rc3 (including) | 4.0.7-rc3 (including) |
| Php | Php | 4.1.0 (including) | 4.1.0 (including) |
| Php | Php | 4.1.1 (including) | 4.1.1 (including) |
| Php | Php | 4.1.2 (including) | 4.1.2 (including) |
| Php | Php | 4.2.0 (including) | 4.2.0 (including) |
| Php | Php | 4.2.1 (including) | 4.2.1 (including) |
| Php | Php | 4.2.2 (including) | 4.2.2 (including) |
| Php | Php | 4.2.3 (including) | 4.2.3 (including) |
| Php | Php | 4.3.0 (including) | 4.3.0 (including) |
| Php | Php | 4.3.1 (including) | 4.3.1 (including) |
| Php | Php | 4.3.2 (including) | 4.3.2 (including) |
| Php | Php | 4.3.3 (including) | 4.3.3 (including) |
| Php | Php | 4.3.4 (including) | 4.3.4 (including) |
| Php | Php | 4.3.5 (including) | 4.3.5 (including) |
| Php | Php | 4.3.6 (including) | 4.3.6 (including) |
| Php | Php | 4.3.7 (including) | 4.3.7 (including) |
| Php | Php | 4.3.8 (including) | 4.3.8 (including) |
| Php | Php | 4.3.9 (including) | 4.3.9 (including) |
| Php | Php | 4.3.10 (including) | 4.3.10 (including) |
| Php | Php | 4.3.11 (including) | 4.3.11 (including) |
| Php-mcrypt | Ubuntu | dapper | * |
| Php-mcrypt | Ubuntu | edgy | * |
| Php-mcrypt | Ubuntu | feisty | * |
References
- http://blog.php-security.org/archives/80-Watching-the-PHP-CVS.html
- http://bugs.php.net/bug.php?id=40999
- http://cvs.php.net/viewvc.cgi/php-src/ext/mcrypt/mcrypt.c?r1=1.91.2.3.2.9\u0026r2=1.91.2.3.2.10
- http://osvdb.org/36087
- http://secunia.com/advisories/26895
- http://www.fortheloot.com/public/mcrypt.patch
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:187
- http://www.novell.com/linux/security/advisories/2007_15_sr.html
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/23984
- http://blog.php-security.org/archives/80-Watching-the-PHP-CVS.html
- http://bugs.php.net/bug.php?id=40999
- http://cvs.php.net/viewvc.cgi/php-src/ext/mcrypt/mcrypt.c?r1=1.91.2.3.2.9\u0026r2=1.91.2.3.2.10
- http://osvdb.org/36087
- http://secunia.com/advisories/26895
- http://www.fortheloot.com/public/mcrypt.patch
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:187
- http://www.novell.com/linux/security/advisories/2007_15_sr.html
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/23984