427BB login.php and getvars.php security bypass

427bb-scripts-security-bypass (24038)

Medium Risk

Description:

427BB could allow a remote attacker to bypass user authentication. The login.php and getvars.php scripts fail to validate the password cookie value when authenticating a user. This could allow a remote attacker to provide a modified username, authenticated, and usertype cookie value to gain unauthorized access to the forum.

*CVSS:

Base Score:	7
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	5.2
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of 427BB (2.3.1 or later), available from the 427BB Web site. See References.

References:

• eVuln Advisory EV0018: 427BB Multiple Vulnerabilities (Cookie-based Authentication Bypass, SQL Injections, XSS).
• SourceForge.net: SourceForge.net: Project Info - 427BB.
• BID-16178: 427BB Authentication Bypass Vulnerability
• CVE-2006-0153: 427BB 2.2 and 2.2.1 verifies authentication credentials based on the username, authenticated, and usertype cookies, which allows remote attackers to bypass authentication by using a valid username and usertype and setting the authenticated cookie.
• SA18354: 427BB Multiple Vulnerabilities
• VUPEN/ADV-2006-0091: 427BB Multiple SQL Injection and Cross Site Scripting Vulnerabilities

Platforms Affected:

• 427BB 427BB 2.2
• 427BB 427BB 2.2.1

Reported:

Jan 07, 2006

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For corrections or additions please email xforce@iss.net

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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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