ZDI-06-005: Symantec VERITAS NetBackup Volume Manager Buffer Overflow http://www.zerodayinitiative.com/advisories/ZDI-06-005.html March 27, 2006 -- CVE ID: CVE-2006-0989 -- Affected Vendor: Symantec VERITAS -- Affected Products: VERITAS NetBackup v6.0 -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since December 19, 2005 by Digital Vaccine protection filter ID 3976. For further product information on the TippingPoint IPS: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable Symantec VERITAS NetBackup installations. Authentication is not required to exploit this vulnerability. This specific flaw exists within the volume manager daemon (vmd.exe) due to incorrect bounds checking during a call to sscanf() that copies user-supplied data to a stack-based buffer. The vulnerable daemon listens on TCP port 13701. -- Vendor Response: Symantec engineers have addressed these issues in all currently supported versions of NetBackup. Symantec engineers did additional reviews and will continue on-going reviews of related file functionality to further enhance the overall security of Veritas NetBackup products and to eliminate any additional potential concerns. Security updates are available for all supported products. Symantec strongly recommends all customers immediately apply the latest cumulative Security Pack updates or Maintenance Pack releases as indicated for their supported product versions to protect against threats of this nature. http://support.veritas.com/docs/281521 -- Disclosure Timeline: 2005.12.20 - Vulnerability reported to vendor 2005.12.19 - Digital Vaccine released to TippingPoint customers 2006.03.24 - Vulnerability information provided to ZDI security partners 2006.03.27 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by Sebastian Apelt. -- About the Zero Day Initiative (ZDI): Established by TippingPoint, a division of 3Com, 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. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com 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, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.