high
7.8
CWE
772
Advisory Published
Updated

CVE-2018-5527

First published: Wed Jun 27 2018(Updated: )

On BIG-IP 13.1.0-13.1.0.7, a remote attacker using undisclosed methods against virtual servers configured with a Client SSL or Server SSL profile that has the SSL Forward Proxy feature enabled can force the Traffic Management Microkernel (tmm) to leak memory. As a result, system memory usage increases over time, which may eventually cause a decrease in performance or a system reboot due to memory exhaustion.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.0.7
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.0.7
F5 BIG-IP Analytics>=13.0.0<=13.1.0.7
F5 Big-ip Application Acceleration Manager>=13.0.0<=13.1.0.7
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.0.7
F5 Big-ip Domain Name System>=13.0.0<=13.1.0.7
F5 Big-ip Edge Gateway>=13.0.0<=13.1.0.7
F5 Big-ip Global Traffic Manager>=13.0.0<=13.1.0.7
F5 Big-ip Link Controller>=13.0.0<=13.1.0.7
F5 Big-ip Local Traffic Manager>=13.0.0<=13.1.0.7
F5 Big-ip Policy Enforcement Manager>=13.0.0<=13.1.0.7
F5 Big-ip Webaccelerator>=13.0.0<=13.1.0.7
F5 Big-ip Websafe>=13.0.0<=13.1.0.7

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Reference Links

Frequently Asked Questions

  • What is CVE-2018-5527?

    CVE-2018-5527 is a vulnerability on BIG-IP 13.1.0-13.1.0.7 that allows a remote attacker to force the Traffic Management Microkernel (tmm) to leak memory.

  • How does CVE-2018-5527 affect F5 products?

    CVE-2018-5527 affects various F5 products, including BIG-IP Access Policy Manager, BIG-IP Advanced Firewall Manager, BIG-IP Analytics, BIG-IP Application Acceleration Manager, BIG-IP Application Security Manager, BIG-IP Domain Name System, BIG-IP Edge Gateway, BIG-IP Global Traffic Manager, BIG-IP Link Controller, BIG-IP Local Traffic Manager, BIG-IP Policy Enforcement Manager, BIG-IP Webaccelerator, and BIG-IP Websafe versions 13.0.0 to 13.1.0.7.

  • What is the severity of CVE-2018-5527?

    CVE-2018-5527 has a severity rating of 7.5 (High).

  • How can I fix the CVE-2018-5527 vulnerability?

    To fix the CVE-2018-5527 vulnerability, upgrade your F5 products to a version higher than 13.1.0.7.

  • Where can I find more information about CVE-2018-5527?

    You can find more information about CVE-2018-5527 at the following references: [Link 1](http://www.securitytracker.com/id/1041196), [Link 2](https://support.f5.com/csp/article/K20134942).

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