ZDI-11-263: Symantec Veritas Storage Foundation vxsvc.exe ASCII String Unpacking Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-11-263 August 16, 2011 -- CVE ID: CVE-2011-0547 -- CVSS: 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C) -- Affected Vendors: Symantec -- Affected Products: Symantec Veritas Storage Foundation -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 11574. 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 Symantec Veritas Storage Foundation Administrator Service. Authentication is not required to exploit this vulnerability. The specific flaw exists within vxsvc.exe. The problem affecting the part of the server running on TCP port 2148 is an integer overflow in the function vxveautil.value_binary_unpack during the handling of the ascii strings (opcode 6) where the 32-bit field supplied by the attacker is used for allocating a destination buffer by adding an additional byte to its value. This integer overflow can be used to create a small allocation which will be subsequently overflowed, allowing the attacker to execute arbitrary code under the context of the SYSTEM. -- Vendor Response: Symantec has issued an update to correct this vulnerability. More details can be found at: http://www.symantec.com/business/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2011&suid=20110815_00 -- Disclosure Timeline: 2011-02-17 - Vulnerability reported to vendor 2011-08-16 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Luigi Auriemma -- 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/