TITLE: UW-imapd CRAM-MD5 Authentication Bypass Vulnerability SECUNIA ADVISORY ID: SA14057 VERIFY ADVISORY: http://secunia.com/advisories/14057/ CRITICAL: Moderately critical IMPACT: Security Bypass WHERE: >From remote SOFTWARE: UW-imapd http://secunia.com/product/1578/ DESCRIPTION: A vulnerability has been reported in University of Washington IMAP server, which can be exploited by malicious people to bypass the user authentication. The vulnerability is caused due to a logic error in the CRAM-MD5 (Challenge-Response Authentication Mechanism with MD5) authentication method when evaluating the conditions of successful authentication. This can be exploited to gain access to arbitrary users' mailboxes. Successful exploitation requires that CRAM-MD5 authentication has been enabled (not default setting). SOLUTION: Update to imap-2004b or later. ftp://ftp.cac.washington.edu/mail/imap.tar.Z PROVIDED AND/OR DISCOVERED BY: Reported by vendor. OTHER REFERENCES: US-CERT VU#702777: http://www.kb.cert.org/vuls/id/702777 ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------