WordPress authentication cookie security bypass
| wordpress-cookie-security-bypass (42027) |  Medium Risk |
Description:
WordPress could allow a remote authenticated attacker to bypass security restrictions, caused by improper validation of the authentication cookie. By creating a specially-crafted account and authentication cookie, an attacker could exploit this vulnerability to gain administrative access and possibly launch further attacks against the system.
*CVSS:
| Base Score: | 5.8 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 4.3 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of WordPress (2.5.1 or later), available from the WordPress Web site. See References.
References:
- Full-Disclosure Mailing List, Fri Apr 25 2008 - 11:02:35 CDT: Wordpress 2.5 Cookie Integrity Protection Vulnerability.
- WordPress Web site: WordPress 2.5.1.
- BID-28935: WordPress Cookie Integrity Protection Unauthorized Access Vulnerability
- CVE-2008-1930: The cookie authentication method in WordPress 2.5 relies on a hash of a concatenated string containing USERNAME and EXPIRY_TIME, which allows remote attackers to forge cookies by registering a username that results in the same concatenated string, as demonstrated by registering usernames beginning with admin to obtain administrator privileges, aka a cryptographic splicing issue. NOTE: this vulnerability exists because of an incomplete fix for CVE-2007-6013.
- SA29965: WordPress PHP Code Execution and Cross-Site Scripting
- SECTRACK ID: 1019923: WordPress Authentication Cookie Integrity Flaw Lets Remote Users Gain Administrative Privileges
- VUPEN/ADV-2008-1372: WordPress Cookie Integrity Protection Privilege Escalation Vulnerability
Platforms Affected:
- WordPress WordPress 2.5
Reported:
Apr 25, 2008
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* 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.