ZDI-09-010: Novell Netware Groupwise GWIA RCPT Command Buffer Overflow Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-09-010 February 2, 2009 -- Affected Vendors: Novell -- Affected Products: Novell Netware -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 1047. 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 Netware Groupwise SMTP daemon. Authentication is not required to exploit this vulnerability. The specific flaw exists during the parsing of malformed RCPT verb arguments to the SMTP daemon. When an overly long e-mail address is received an off-by-one condition is triggered which minimally will cause a denial of service and can result in arbitrary code execution. -- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at: http://download.novell.com/Download?buildid=GjZRRdqCFW0 http://download.novell.com/Download?buildid=HpEEW7aXWEY -- Disclosure Timeline: 2008-08-26 - Vulnerability reported to vendor 2009-02-02 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Nick DeBaggis -- 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/ CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is being sent by 3Com for the sole use of the intended recipient(s) and may contain confidential, proprietary and/or privileged information. Any unauthorized review, use, disclosure and/or distribution by any recipient is prohibited. If you are not the intended recipient, please delete and/or destroy all copies of this message regardless of form and any included attachments and notify 3Com immediately by contacting the sender via reply e-mail or forwarding to 3Com at postmaster (at) 3com (dot) com. [email concealed]