medium
5.3
CWE
20
Advisory Published
Updated

CVE-2018-5537: Input Validation

First published: Wed Jul 25 2018(Updated: )

A remote attacker may be able to disrupt services on F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 if the TMM virtual server is configured with a HTML or a Rewrite profile. TMM may restart while processing some specially prepared HTML content from the back end.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 Big-ip Local Traffic Manager>=11.2.1<=11.5.6
F5 Big-ip Local Traffic Manager>=11.6.0<=11.6.3.1
F5 Big-ip Local Traffic Manager>=12.1.0<=12.1.3.5
F5 Big-ip Local Traffic Manager>=13.0.0<=13.1.0.5
F5 Big-ip Application Acceleration Manager>=11.2.1<=11.5.6
F5 Big-ip Application Acceleration Manager>=11.6.0<=11.6.3.1
F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.3.5
F5 Big-ip Application Acceleration Manager>=13.0.0<=13.1.0.5
F5 BIG-IP Advanced Firewall Manager>=11.2.1<=11.5.6
F5 BIG-IP Advanced Firewall Manager>=11.6.0<=11.6.3.1
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.2
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.0.5
F5 BIG-IP Access Policy Manager>=11.2.1<=11.5.6
F5 BIG-IP Access Policy Manager>=11.6.0<=11.6.3.1
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.3.5
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.0.5
F5 BIG-IP Application Security Manager>=10.1.0<=11.5.6
F5 BIG-IP Application Security Manager>=11.6.0<=11.6.3.1
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.3.5
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.0.5
F5 Big-ip Edge Gateway>=11.2.1<=11.5.6
F5 Big-ip Edge Gateway>=11.6.0<=11.6.3.1
F5 Big-ip Edge Gateway>=12.1.0<=12.1.3.5
F5 Big-ip Edge Gateway>=13.0.0<=13.1.0.5
F5 Big-ip Global Traffic Manager>=11.2.1<=11.5.6
F5 Big-ip Global Traffic Manager>=11.6.0<=11.6.3.1
F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.3.5
F5 Big-ip Global Traffic Manager>=13.0.0<=13.1.0.5
F5 Big-ip Policy Enforcement Manager>=11.2.1<=11.5.6
F5 Big-ip Policy Enforcement Manager>=11.6.0<=11.6.3.1
F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.3.5
F5 Big-ip Policy Enforcement Manager>=13.0.0<=13.1.0.5
F5 Big-ip Webaccelerator>=11.2.1<=11.5.6
F5 Big-ip Webaccelerator>=11.6.0<=11.6.3.1
F5 Big-ip Webaccelerator>=12.1.0<=12.1.3.5
F5 Big-ip Webaccelerator>=13.0.0<=13.1.0.5
F5 Big-ip Websafe>=11.2.1<=11.5.6
F5 Big-ip Websafe>=11.6.1<=11.6.3.1
F5 Big-ip Websafe>=12.1.0<=12.1.3.5
F5 Big-ip Websafe>=13.0.0<=13.1.0.5

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-5537?

    The severity of CVE-2018-5537 is medium with a CVSS score of 5.3.

  • Which versions of F5 BIG-IP are affected by CVE-2018-5537?

    F5 BIG-IP versions 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, and 11.2.1-11.5.6 are affected by CVE-2018-5537.

  • How can a remote attacker exploit CVE-2018-5537?

    A remote attacker can exploit CVE-2018-5537 by sending specially prepared HTML content to the TMM virtual server on F5 BIG-IP.

  • What can happen if the TMM virtual server is configured with a HTML or Rewrite profile on F5 BIG-IP?

    If the TMM virtual server is configured with a HTML or Rewrite profile on F5 BIG-IP, a remote attacker may be able to disrupt services or cause TMM to restart while processing certain HTML content from the back end.

  • How can I fix CVE-2018-5537 on F5 BIG-IP?

    To fix CVE-2018-5537 on F5 BIG-IP, update to a version that is not affected by the vulnerability and follow the recommendations provided by F5 Networks.

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