User Account Enumeration Vulnerability in Siemens WinCC

CVE-2013-3959 · MEDIUM Severity

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

The Web Navigator in Siemens WinCC before 7.2 Update 1, as used in SIMATIC PCS7 8.0 SP1 and earlier and other products, exhibits different behavior for NetBIOS user names depending on whether the user account exists, which allows remote authenticated users to enumerate account names via crafted URL parameters.

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