TippingPoint Zero Day Initiative

Cisco Security Agent Management st_upload Remote Code Execution Vulnerability

ZDI-11-088: February 16th, 2011


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Cisco Security Agent Management Console. Authentication is not required to exploit this vulnerability.

The flaw exists within the webagent.exe component which is handed requests by an Apache instance that listens by default on TCP port 443. When handling an st_upload request the process does not properly validate POST parameters used for a file creation. The contents of this newly created file are controllable via another POST variable. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM user.

Vendor Response

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

Disclosure Timeline

    2010-09-23 - Vulnerability reported to vendor
    2011-02-16 - Coordinated public release of advisory


This vulnerability was discovered by:
    Gerry Eisenhaur