CVE-2011-4876

Name of the Vulnerable Software and Affected Versions Siemens WinCC flexible versions 2004 through 2008 Siemens WinCC V11 (aka TIA portal) Siemens TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels Siemens WinCC V11 Runtime Advanced Siemens WinCC flexible Runtime

Description The issue allows remote attackers to execute, read, create, modify, or delete arbitrary files via a .. (dot dot) in a string when Transfer Mode is enabled. This is due to a directory traversal vulnerability in HmiLoad in the runtime loader.

Recommendations For Siemens WinCC flexible versions 2004 through 2008, disable Transfer Mode to prevent exploitation. For Siemens WinCC V11 (aka TIA portal), disable Transfer Mode to prevent exploitation. For Siemens TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels, disable Transfer Mode to prevent exploitation. For Siemens WinCC V11 Runtime Advanced, disable Transfer Mode to prevent exploitation. For Siemens WinCC flexible Runtime, disable Transfer Mode to prevent exploitation.