phpBB gen_rand_string() weak random number generator
| phpbb-weak-rnd (24573) |  Low Risk |
Description:
phpBB use the gen_rand_string() function to generate predictable random numbers. A remote attacker with knowledge of a phpBB user's username and email address could exploit this weakness in combination with the "I forgot my password" option to determine a user's password using brute force techniques.
Platforms Affected:
- phpBB, phpBB 2.0.19 and prior
Remedy:
Upgrade to the latest version of phpBB (2.0.19 or later), available from the phpBB Web site. See References.
Consequences:
Other
References:
- phpBB Web site, phpBB:: Creating Communities at http://www.phpbb.com/.
- r-security dot net, Exploiting PRNGs in PHP at http://www.r-security.net/tutorials/view/readtutorial.php?id=4.
Reported:
Feb 05, 2006
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