ZDI-11-274: EMC Autostart ftAgent Opcode 0x140 Parsing Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-11-274 August 23, 2011 -- CVE ID: CVE-2011-2735 -- CVSS: 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C) -- Affected Vendors: EMC -- Affected Products: EMC AutoStart -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 11599. 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 EMC AutoStart. Authentication is not required to exploit this vulnerability. The specific flaw exists in the Agent Service (ftAgent.exe). The Agent Service listens on TCP port 8045 for communications between AutoStart nodes. When handling messages with opcode 0x140 the process performs arithmetic on an unvalidated user-supplied value used to determine the size of a new heap buffer, allowing a potential integer wrap to cause a heap buffer overflow. Remote, unauthenticated attackers can exploit this vulnerability by sending malformed message packets to the target, which can ultimately lead to arbitrary code execution under the context of the SYSTEM user. -- Vendor Response: EMC has issued an update to correct this vulnerability. More details can be found at: http://www.securityfocus.com/archive/1/519371 -- Disclosure Timeline: 2011-07-20 - Vulnerability reported to vendor 2011-08-23 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Sebastian Apelt (www.siberas.de) -- 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/