Description
WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for "user convenience."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wordpress | 2.8.3-1 | — |
| Debian 13 | wordpress | 2.8.3-1 | — |
| Debian 12 | wordpress | 2.8.3-1 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
-
WordPress Brute Force and User Enumeration Utility
auxiliary/scanner/http/wordpress_login_enum
Exploit-DB 1
- WordPress Plugin Block-Spam-By-Math-Reloaded - Bypass EDB-17702 · webapps · Aug 20, 2011
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- FEDORA-2009-8538 vendor-advisory
- http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Unchecked
- FEDORA-2009-7729 vendor-advisory
- 20090708 CORE-2009-01515 - WordPress Privileges Unchecked in admin.php and Multiple Information mailing-list
- 1022528 vdb-entry
- FEDORA-2009-7701 vendor-advisory
- ADV-2009-1833 vdb-entry
- FEDORA-2009-8529 vendor-advisory
- 55713 vdb-entry
- 9110 exploit
- 35581 vdb-entry