Auth bypass in Siemens Simatic Hmi Panels
CVE-2011-4508
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 generates predictable authentication tokens for cookies, which makes it easier for remote attackers to bypass authentication via a crafted cookie.
Vulnerability class: Broken Authentication
EPSS: 0.031 (86.5th percentile) — read the EPSS interpretation.
Affected products
- Siemens Simatic_hmi_panels — versions comfort_panels, mobile_panels, mp
- Siemens Wincc — versions v11
- Siemens Wincc_flexible — versions 2004, 2005, 2007
- Siemens Wincc_flexible_runtime
- Siemens Wincc_runtime_advanced — versions v11
- N/a — versions n/a
Weakness classification (CWE)
References
- cret@cert.org (x_refsource_CONFIRM, Vendor Advisory)
- cret@cert.org (US Government Resource, x_refsource_MISC)