ZDI-09-016: Novell Client/NetIdentity Agent Remote Arbitrary Pointer Dereference Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-09-016 April 6, 2009 -- Affected Vendors: Novell -- Affected Products: Novell Netware -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Netware. A valid IPC$ connection must be established in order to exploit this vulnerability. The specific flaw exists within xtagent.exe during the handling of RPC messages over the XTIERRPCPIPE named pipe. Insufficient sanity checking allows remote attackers to dereference an arbitrary pointer which can be leveraged to execute code under the context of the system user. -- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at: http://download.novell.com/Download?buildid=6ERQGPjRZ8o~ -- Disclosure Timeline: 2008-10-15 - Vulnerability reported to vendor 2009-04-06 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Ruben Santamarta -- 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/