Joomla! random numbers information disclosure

joomla-randomnumbers-info-disclosure (45068)

Low Risk

Description:

Joomla! could allow a remote attacker to obtain sensitive information, caused by the use of a weak seed to initialize the pseudorandom number generator (PRNG). A remote attacker could exploit this vulnerability using brute force techniques to discover passwords or guess a password reset token.

*CVSS:

Base Score:	5
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	3.7
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of Joomla! (1.5.7 or later), available from the Joomla! Web site. See References.

References:

• Joomla! Security Announcements - Tuesday, 09 September 2008 16:09: [20080902] - Core - Random Number Generation Flaw.
• Joomla! Web site: Joomla 1.5.7 Security Release Now Available.
• CVE-2008-4102: Joomla! 1.5 before 1.5.7 initializes PHP's PRNG with a weak seed, which makes it easier for attackers to guess the pseudo-random values produced by PHP's mt_rand function, as demonstrated by guessing password reset tokens, a different vulnerability than CVE-2008-3681.
• SA31789: Joomla! Multiple Vulnerabilities

Platforms Affected:

• Joomla! Joomla! 1.5
• Joomla! Joomla! 1.5.1
• Joomla! Joomla! 1.5.2
• Joomla! Joomla! 1.5.3
• Joomla! Joomla! 1.5.4
• Joomla! Joomla! 1.5.5
• Joomla! Joomla! 1.5.6

Reported:

Sep 09, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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