ZDI-11-110: (0day) IBM Lotus Domino Server Controller Authentication Bypass Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-11-110 March 22, 2011 -- CVSS: 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C) -- Affected Vendors: IBM -- Affected Products: IBM Lotus Domino -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Lotus Domino Server Controller. Authentication is not required to exploit this vulnerability. The flaw exists within the remote console functionality which listens by default on TCP port 2050. When handling A user authentication the server uses a user supplied COOKIEFILE path to retrieve stored credentials. The application then compares this data against the user provided username and cookie. The path to the COOKIEFILE can be a UNC path allowing the attacker to control both the known good credentials and the challenge credentials. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM user. -- Vendor Response: March 22, 2011 - This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 180 day deadline. -- Mitigations: Setting a console password provides another level of authentication and limits the commands available in the console. To further mitigate this vulnerability access to 2050/tcp on hosts running the Domino Server Controller application should be restricted to authorized hosts. -- Disclosure Timeline: 2010-09-23 - Vulnerability reported to vendor 2011-03-22 - Public release of advisory -- Credit: This vulnerability was discovered by: * Patrik Karlsson <patrik (at) cqure (dot) net [email concealed]> -- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. TippingPoint does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, TippingPoint provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, TippingPoint provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product. Our vulnerability disclosure policy is available online at: http://www.zerodayinitiative.com/advisories/disclosure_policy/ Follow the ZDI on Twitter: http://twitter.com/thezdi