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.
Platforms Affected:
- WordPress, WordPress 2.5
Remedy:
Upgrade to the latest version of WordPress (2.5.1 or later), available from the WordPress Web site. See References.
Consequences:
Bypass Security
References:
- Full-Disclosure Mailing List, Fri Apr 25 2008 - 11:02:35 CDT, Wordpress 2.5 Cookie Integrity Protection Vulnerability at http://archives.neohapsis.com/archives/fulldisclosure/2008-04/0696.html.
- WordPress Web site, WordPress 2.5.1 at http://wordpress.org/development/2008/04/wordpress-251/.
- 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.
- FrSIRT/ADV-2008-1372: WordPress Cookie Integrity Protection Privilege Escalation Vulnerability
- SA29965: WordPress PHP Code Execution and Cross-Site Scripting
- SECTRACK ID: 1019923: WordPress Authentication Cookie Integrity Flaw Lets Remote Users Gain Administrative Privileges
Reported:
Apr 25, 2008
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