TippingPoint Zero Day Initiative
 

EMC AutoStart ftAgent Opcode 50 Subcode 04 Parsing Remote Code Execution Vulnerability

ZDI-12-116: July 12th, 2012

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12435. For further product information on the TippingPoint IPS:

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 within the ftAgent.exe service, which listens by default on TCP port 8045. When handling messages with opcode 50 (0x32) and subcode 04, 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. This user supplied value is also used to determine how many times a loop will parse the data into the buffer. Combined, the vulnerable code will allow for the heap to be corrupted. This vulnerability can be leveraged to execute code under the context of the SYSTEM user.

Vendor Response

EMC has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2011-11-21 - Vulnerability reported to vendor
    2012-07-12 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    gwslabs.com