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Cisco Call Manager CTLProvider Heap Overflow Vulnerability

TPTI-08-02: January 16th, 2008

CVE ID

Affected Vendors

Affected Products

Vulnerability Details

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

The specific flaw exists within the CTL Provider Service, CTLProvider.exe, which binds to TCP port 2444. The service operates over a SSL encrypted transport. Due to a logic flaw in the way data is received in a loop a heap allocation can be arbitrarily overflown resulting in the control of subsequent heap chunks. This can lead to arbitrary code execution.

Vendor Response

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

Disclosure Timeline

    2007-06-04 - Vulnerability reported to vendor
    2008-01-16 - Coordinated public release of advisory

Credit

This vulnerability was discovered by: