CWE
287
Advisory Published
Updated

CVE-2011-4514

First published: Fri Feb 03 2012(Updated: )

The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not perform authentication, which makes it easier for remote attackers to obtain access via a TCP session.

Credit: cret@cert.org

Affected SoftwareAffected VersionHow to fix
Siemens SIMATIC WinCC flexible 2008=2004
Siemens SIMATIC WinCC flexible 2008=2008
Siemens SIMATIC WinCC flexible 2008=2007
Siemens SIMATIC WinCC flexible 2008=2005
Siemens Simatic WinCC=v11
Siemens SIMATIC HMI Panels=tp
Siemens SIMATIC HMI Panels=op
Siemens SIMATIC HMI Panels=mobile_panels
Siemens SIMATIC HMI Panels=comfort_panels
Siemens SIMATIC HMI Panels=mp
Siemens SIMATIC WinCC Runtime Advanced=v11
Siemens SIMATIC WinCC flexible Runtime

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Frequently Asked Questions

  • What is the severity of CVE-2011-4514?

    CVE-2011-4514 is considered to have a high severity as it allows remote attackers to gain access without authentication.

  • How do I fix CVE-2011-4514?

    To mitigate CVE-2011-4514, apply the security patches provided by Siemens for the affected software versions.

  • What systems are affected by CVE-2011-4514?

    CVE-2011-4514 affects Siemens WinCC flexible versions 2004 to 2008, WinCC V11, and various SIMATIC HMI panels.

  • What type of attack can be carried out due to CVE-2011-4514?

    CVE-2011-4514 allows remote code execution due to the lack of authentication in the TELNET daemon.

  • Is there a workaround for CVE-2011-4514?

    A potential workaround for CVE-2011-4514 is to disable the TELNET service if it is not required for operations.

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