ZDI-10-062: Novell Netware NWFTPD RMD/RNFR/DELE Argument Parsing Remote Code Execution Vulnerabilities http://www.zerodayinitiative.com/advisories/ZDI-10-062 April 5, 2010 -- CVE ID: CVE-2010-0625 -- 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 6331. 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 NWFTPD daemon. Authentication or default anonymous access is required to exploit this vulnerability. The specific flaw exists when parsing malformed arguments to the verbs RMD, RNFR, and DELE. Overly long parameters will result in stack based buffer overflows which can be leveraged to execute arbitrary code. -- Vendor Response: Novell states: A public fix for this issue has been released in download nwftpd16.zip, available at http://download.novell.com/patch/finder/ -- Disclosure Timeline: 2008-08-26 - Vulnerability reported to vendor 2010-04-05 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Nick DeBaggis * Francis Provencher -- 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 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/