ZDI-12-196 : Novell Groupwise GWIA ber_get_stringa Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-196 December 21, 2012 - -- CVE ID: CVE-2012-0417 - -- CVSS: 10, AV:N/AC:L/Au:N/C:C/I:C/A:C - -- Affected Vendors: Novell - -- Affected Products: Novell Groupwise - -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 12495. For further product information on the TippingPoint IPS, visit: http://www.tippingpoint.com - -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Groupwise. Authentication is not required to exploit this vulnerability. The flaw exists within the Groupwise Internet Agent component, specifically the optional LDAP server which listens on tcp port 389. When parsing a BER encoded parameter the specified size is used to allocate a destination buffer. A properly encoded BER chunk could cause an integer size value to wrap before buffer allocation. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM account. - -- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at: http://www.novell.com/support/kb/doc.php?id=7010770 - -- Disclosure Timeline: 2011-10-21 - Vulnerability reported to vendor 2012-12-21 - Coordinated public release of advisory - -- Credit: This vulnerability was discovered by: * Francis Provencher From Protek Research Lab's - -- 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