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Privilege Escalation through Binary Planting in Panda Internet Security

Software:    Panda Internet Security 2012 & 2013
Vendor:    http://www.pandasecurity.com/
Vulnerability Type:    Binary Planting Attack
Remote:    No
Local:    Yes
Discovered:    09 September 2012
Reported:    19 November 2012
Disclosed:    04 December 2012


As a result of an incorrect dynamic link library (DLL) loading in Panda Internet Security, an attacker with user level access to the machine can elevate his/her privileges to SYSTEM.

This can be accomplished by planting a malicious DLL file in a writable folder that is part of the system's %PATH% variable. The malicious DLL is loaded when the vulnerable Panda service or the system is restarted.

The following DLLs are insecurely loaded by Panda Internet Security 2013:

Insecure DLL    Vulnerable Service
Pavshld.dll PsCtrls.exe, PsImSvc.exe, PavFnSvr.exe, PskSvc.exe
ImFilter.dll2 PsImSvc.exe
ImFilter.dll3 PsImSvc.exe
ImFilter.dll4 PsImSvc.exe

In addition to the above DLLs, Panda Internet Security 2012 also loads ham.dll insecurely.