high
7.5
Advisory Published
Updated

CVE-2019-6623

First published: Tue Jul 02 2019(Updated: )

On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, undisclosed traffic sent to BIG-IP iSession virtual server may cause the Traffic Management Microkernel (TMM) to restart, resulting in a Denial-of-Service (DoS).

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.4
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Access Policy Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Access Policy Manager>=14.1.0<=14.1.0.5
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.4
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Advanced Firewall Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Advanced Firewall Manager>=14.1.0<=14.1.0.5
f5 big-ip application acceleration manager>=12.1.0<=12.1.4
f5 big-ip application acceleration manager>=13.0.0<=13.1.1.4
f5 big-ip application acceleration manager>=14.0.0<=14.0.0.4
f5 big-ip application acceleration manager>=14.1.0<=14.1.0.5
f5 big-ip link controller>=12.1.0<=12.1.4
f5 big-ip link controller>=13.0.0<=13.1.1.4
f5 big-ip link controller>=14.0.0<=14.0.0.4
f5 big-ip link controller>=14.1.0<=14.1.0.5
F5 BIG-IP Policy Enforcement Manager>=12.1.0<=12.1.4
F5 BIG-IP Policy Enforcement Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Policy Enforcement Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Policy Enforcement Manager>=14.1.0<=14.1.0.5
F5 BIG-IP WebAccelerator>=12.1.0<=12.1.4
F5 BIG-IP WebAccelerator>=13.0.0<=13.1.1.4
F5 BIG-IP WebAccelerator>=14.0.0<=14.0.0.4
F5 BIG-IP WebAccelerator>=14.1.0<=14.1.0.5
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.4
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Application Security Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Application Security Manager>=14.1.0<=14.1.0.5
F5 BIG-IP Local Traffic Manager>=12.1.0<=12.1.4
F5 BIG-IP Local Traffic Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Local Traffic Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Local Traffic Manager>=14.1.0<=14.1.0.5
f5 big-ip fraud protection service>=12.1.0<=12.1.4
f5 big-ip fraud protection service>=13.0.0<=13.1.1.4
f5 big-ip fraud protection service>=14.0.0<=14.0.0.4
f5 big-ip fraud protection service>=14.1.0<=14.1.0.5
F5 BIG-IP Global Traffic Manager>=12.1.0<=12.1.4
F5 BIG-IP Global Traffic Manager>=13.0.0<=13.1.1.4
F5 BIG-IP Global Traffic Manager>=14.0.0<=14.0.0.4
F5 BIG-IP Global Traffic Manager>=14.1.0<=14.1.0.5
F5 BIG-IP Analytics>=12.1.0<=12.1.4
F5 BIG-IP Analytics>=13.0.0<=13.1.1.4
F5 BIG-IP Analytics>=14.0.0<=14.0.0.4
F5 BIG-IP Analytics>=14.1.0<=14.1.0.5
F5 BIG-IP Edge Gateway>=12.1.0<=12.1.4
F5 BIG-IP Edge Gateway>=13.0.0<=13.1.1.4
F5 BIG-IP Edge Gateway>=14.0.0<=14.0.0.4
F5 BIG-IP Edge Gateway>=14.1.0<=14.1.0.5
f5 big-ip domain name system>=12.1.0<=12.1.4
f5 big-ip domain name system>=13.0.0<=13.1.1.4
f5 big-ip domain name system>=14.0.0<14.0.0.4
f5 big-ip domain name system>=14.1.0<=14.1.0.5

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-6623?

    CVE-2019-6623 has a severity rating that can lead to Denial-of-Service (DoS) conditions on affected systems.

  • How do I fix CVE-2019-6623?

    Mitigation for CVE-2019-6623 involves updating to the latest patched versions of affected F5 BIG-IP software.

  • What versions are affected by CVE-2019-6623?

    CVE-2019-6623 affects F5 BIG-IP versions 12.1.0 through 12.1.4, 13.0.0 through 13.1.1.4, and 14.1.0 through 14.1.0.5.

  • What vulnerabilities can CVE-2019-6623 introduce?

    CVE-2019-6623 can potentially result in unauthorized DoS attacks that may disrupt service availability.

  • How does CVE-2019-6623 impact system operations?

    CVE-2019-6623 may cause the Traffic Management Microkernel (TMM) to restart, affecting traffic management and overall service availability.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203