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CVE-2019-6623

HIGHCVSS 7.5/10EPSS 2.53%

Last modified

CVE-2019-6623 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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).. EPSS estimates a 2.53% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
2.53%

82.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Access Policy Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Access Policy Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Access Policy Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Advanced Firewall Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Advanced Firewall Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Advanced Firewall Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Advanced Firewall Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Application Acceleration Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Application Acceleration Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Application Acceleration Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Application Acceleration Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Link Controller>= 12.1.0, <= 12.1.4
F5Big-Ip Link Controller>= 13.0.0, <= 13.1.1.4
F5Big-Ip Link Controller>= 14.0.0, <= 14.0.0.4
F5Big-Ip Link Controller>= 14.1.0, <= 14.1.0.5
F5Big-Ip Policy Enforcement Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Policy Enforcement Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Policy Enforcement Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Policy Enforcement Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Webaccelerator>= 12.1.0, <= 12.1.4
F5Big-Ip Webaccelerator>= 13.0.0, <= 13.1.1.4
F5Big-Ip Webaccelerator>= 14.0.0, <= 14.0.0.4
F5Big-Ip Webaccelerator>= 14.1.0, <= 14.1.0.5
F5Big-Ip Application Security Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Application Security Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Application Security Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Application Security Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Local Traffic Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Local Traffic Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Local Traffic Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Local Traffic Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Fraud Protection Service>= 12.1.0, <= 12.1.4
F5Big-Ip Fraud Protection Service>= 13.0.0, <= 13.1.1.4
F5Big-Ip Fraud Protection Service>= 14.0.0, <= 14.0.0.4
F5Big-Ip Fraud Protection Service>= 14.1.0, <= 14.1.0.5
F5Big-Ip Global Traffic Manager>= 12.1.0, <= 12.1.4
F5Big-Ip Global Traffic Manager>= 13.0.0, <= 13.1.1.4
F5Big-Ip Global Traffic Manager>= 14.0.0, <= 14.0.0.4
F5Big-Ip Global Traffic Manager>= 14.1.0, <= 14.1.0.5
F5Big-Ip Analytics>= 12.1.0, <= 12.1.4
F5Big-Ip Analytics>= 13.0.0, <= 13.1.1.4
F5Big-Ip Analytics>= 14.0.0, <= 14.0.0.4
F5Big-Ip Analytics>= 14.1.0, <= 14.1.0.5
F5Big-Ip Edge Gateway>= 12.1.0, <= 12.1.4
F5Big-Ip Edge Gateway>= 13.0.0, <= 13.1.1.4
F5Big-Ip Edge Gateway>= 14.0.0, <= 14.0.0.4
F5Big-Ip Edge Gateway>= 14.1.0, <= 14.1.0.5
F5Big-Ip Domain Name System>= 12.1.0, <= 12.1.4
F5Big-Ip Domain Name System>= 13.0.0, <= 13.1.1.4

Showing 50 of 52 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6623?
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).
How severe is CVE-2019-6623?
CVE-2019-6623 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.53% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6623?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6623?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST