CVE-2011-4508

Description

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.

Category

9.3
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 0.19%
Vendor Advisory siemens.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf vendor advisory
http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf us government resource

Frequently Asked Questions

What is the severity of CVE-2011-4508?
CVE-2011-4508 has been scored as a critical severity vulnerability.
How to fix CVE-2011-4508?
To fix CVE-2011-4508, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4508 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2011-4508 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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