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.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Wincc_flexible | Siemens | 2004 (including) | 2004 (including) |
| Wincc_flexible | Siemens | 2005 (including) | 2005 (including) |
| Wincc_flexible | Siemens | 2007 (including) | 2007 (including) |
| Wincc_flexible | Siemens | 2008 (including) | 2008 (including) |
| Wincc_flexible | Siemens | 2008-sp1 (including) | 2008-sp1 (including) |
| Wincc_flexible | Siemens | 2008-sp2 (including) | 2008-sp2 (including) |