BlogPHP blogphp_username security bypass

blogphp-blogphpusername-security-bypass (42372)

Medium Risk

Description:

BlogPHP could allow a remote attacker to bypass security restrictions, caused by an error in the authentication process. By modifying the cookie, a remote attacker could exploit this vulnerability and bypass security restrictions to change the blogphp_username and perform arbitrary tasks with the privileges of the victim.

*CVSS:

Base Score:	7.5
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6.1
Exploitability:	Unproven
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Bypass Security

Remedy:

No remedy available as of July 9, 2011.

References:

• BlogPHP Web site: BlogPHP - Free PHP blog script.
• David Sopas Ferreira Advisories, 10-05-2008PT: XSS, HTML Injection and Cookie Manipulation in BlogPHP v2.0.
• BID-29133: BlogPHP Multiple HTML Injection, Cross-Site Scripting and Cookie Manipulation Vulnerabilities
• CVE-2008-2524: BlogPHP 2.0 allows remote attackers to bypass authentication, and post (1) messages or (2) comments as an arbitrary user, via a modified blogphp_username field in a cookie.
• SA30165: BlogPHP Script Insertion and Cross-Site Scripting

Platforms Affected:

• BlogPHP BlogPHP 2.0

Reported:

May 10, 2008

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* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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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