high
7.8
CWE
20
Advisory Published
Updated

CVE-2018-5509: Input Validation

First published: Thu Mar 22 2018(Updated: )

On F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1, when a specifically configured virtual server receives traffic of an undisclosed nature, TMM will crash and take the configured failover action, potentially causing a denial of service. The configuration which exposes this issue is not common and in general does not work when enabled in previous versions of BIG-IP. Starting in 12.1.0, BIG-IP will crash if the configuration which exposes this issue is enabled and the virtual server receives non TCP traffic. With the fix of this issue, additional configuration validation logic has been added to prevent this configuration from being applied to a virtual server. There is only data plane exposure to this issue with a non-standard configuration. There is no control plane exposure.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 BIG-IP Access Policy Manager>=12.1.0<12.1.3.2
F5 BIG-IP Access Policy Manager>=13.0.0<13.1.0.4
F5 BIG-IP Advanced Firewall Manager>=12.1.0<12.1.3.2
F5 BIG-IP Advanced Firewall Manager>=13.0.0<13.1.0.4
F5 Big-ip Application Acceleration Manager>=12.1.0<12.1.3.2
F5 Big-ip Application Acceleration Manager>=13.0.0<13.1.0.4
F5 BIG-IP Application Security Manager>=12.1.0<12.3.1.2
F5 BIG-IP Application Security Manager>=13.0.0<13.1.0.4
F5 Big-ip Link Controller>=12.1.0<12.1.3.2
F5 Big-ip Link Controller>=13.0.0<13.1.0.4
F5 Big-ip Local Traffic Manager>=12.1.0<12.1.3.2
F5 Big-ip Local Traffic Manager>=13.0.0<13.1.0.4
F5 Big-ip Policy Enforcement Manager>=12.1.0<12.1.3.2
F5 Big-ip Policy Enforcement Manager>=13.0.0<13.1.0.4
F5 Big-ip Websafe=1.0.0

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Reference Links

Frequently Asked Questions

  • What is vulnerability CVE-2018-5509?

    Vulnerability CVE-2018-5509 is a vulnerability that affects F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1, where TMM (Traffic Management Microkernel) crashes and triggers a failover action, potentially leading to a denial of service when a specifically configured virtual server receives traffic of an undisclosed nature.

  • What is the severity of CVE-2018-5509?

    The severity of vulnerability CVE-2018-5509 is high, with a CVSS (Common Vulnerability Scoring System) score of 7.5.

  • Which software versions are affected by CVE-2018-5509?

    F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1 are affected by vulnerability CVE-2018-5509.

  • How can I mitigate CVE-2018-5509?

    To mitigate vulnerability CVE-2018-5509, it is recommended to upgrade to a non-vulnerable version of F5 BIG-IP.

  • Where can I find more information about CVE-2018-5509?

    You can find more information about vulnerability CVE-2018-5509 at the following references: [SecurityFocus](http://www.securityfocus.com/bid/103504), [SecurityTracker](http://www.securitytracker.com/id/1040562), and [F5 Support](https://support.f5.com/csp/article/K49440608).

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