Denial of Service and Arbitrary Memory Read Vulnerability in Siemens WinCC Flexible and TIA Portal

CVE-2011-4879 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:N/A:C

miniweb.exe in the HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not properly handle URIs beginning with a 0xfa character, which allows remote attackers to read data from arbitrary memory locations or cause a denial of service (application crash) via a crafted POST request.

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