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CVE-2019-6611

HIGHCVSS 7.5/10EPSS 1.77%

Last modified

CVE-2019-6611 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. When BIG-IP 14.0.0-14.1.0.1, 13.0.0-13.1.1.4, 12.1.0-12.1.4, 11.6.1-11.6.3.4, and 11.5.2-11.5.8 are processing certain rare data sequences occurring in PPTP VPN traffic, the BIG-IP system may execute incorrect logic. The TMM may restart and produce a core file as a result of this condition. EPSS estimates a 1.77% chance of exploitation in the next 30 days.

Description

When BIG-IP 14.0.0-14.1.0.1, 13.0.0-13.1.1.4, 12.1.0-12.1.4, 11.6.1-11.6.3.4, and 11.5.2-11.5.8 are processing certain rare data sequences occurring in PPTP VPN traffic, the BIG-IP system may execute incorrect logic. The TMM may restart and produce a core file as a result of this condition. The BIG-IP system provisioned with the CGNAT module and configured with a virtual server using a PPTP profile is exposed to this vulnerability.

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
1.77%

75.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 11.5.2, < 11.5.9
F5Big-Ip Access Policy Manager>= 11.6.1, < 11.6.4
F5Big-Ip Access Policy Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Access Policy Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Access Policy Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Advanced Firewall Manager>= 11.5.2, < 11.5.9
F5Big-Ip Advanced Firewall Manager>= 11.6.1, < 11.6.4
F5Big-Ip Advanced Firewall Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Advanced Firewall Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Advanced Firewall Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Application Acceleration Manager>= 11.5.2, < 11.5.9
F5Big-Ip Application Acceleration Manager>= 11.6.1, < 11.6.4
F5Big-Ip Application Acceleration Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Application Acceleration Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Application Acceleration Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Link Controller>= 11.5.2, < 11.5.9
F5Big-Ip Link Controller>= 11.6.1, < 11.6.4
F5Big-Ip Link Controller>= 12.1.0, < 12.1.4.1
F5Big-Ip Link Controller>= 13.0.0, < 13.1.1.5
F5Big-Ip Link Controller>= 14.0.0, < 14.1.0.2
F5Big-Ip Policy Enforcement Manager>= 11.5.2, < 11.5.9
F5Big-Ip Policy Enforcement Manager>= 11.6.1, < 11.6.4
F5Big-Ip Policy Enforcement Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Policy Enforcement Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Policy Enforcement Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Webaccelerator>= 11.5.2, < 11.5.9
F5Big-Ip Webaccelerator>= 11.6.1, < 11.6.4
F5Big-Ip Webaccelerator>= 12.1.0, < 12.1.4.1
F5Big-Ip Webaccelerator>= 13.0.0, < 13.1.1.5
F5Big-Ip Webaccelerator>= 14.0.0, < 14.1.0.2
F5Big-Ip Application Security Manager>= 11.5.2, < 11.5.9
F5Big-Ip Application Security Manager>= 11.6.1, < 11.6.4
F5Big-Ip Application Security Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Application Security Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Application Security Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Local Traffic Manager>= 11.5.2, < 11.5.9
F5Big-Ip Local Traffic Manager>= 11.6.1, < 11.6.4
F5Big-Ip Local Traffic Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Local Traffic Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Local Traffic Manager>= 14.0.0, < 14.1.0.2
F5Big-Ip Fraud Protection Service>= 11.5.2, < 11.5.9
F5Big-Ip Fraud Protection Service>= 11.6.1, < 11.6.4
F5Big-Ip Fraud Protection Service>= 12.1.0, < 12.1.4.1
F5Big-Ip Fraud Protection Service>= 13.0.0, < 13.1.1.5
F5Big-Ip Fraud Protection Service>= 14.0.0, < 14.1.0.2
F5Big-Ip Global Traffic Manager>= 11.5.2, < 11.5.9
F5Big-Ip Global Traffic Manager>= 11.6.1, < 11.6.4
F5Big-Ip Global Traffic Manager>= 12.1.0, < 12.1.4.1
F5Big-Ip Global Traffic Manager>= 13.0.0, < 13.1.1.5
F5Big-Ip Global Traffic Manager>= 14.0.0, < 14.1.0.2

Showing 50 of 65 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6611?
When BIG-IP 14.0.0-14.1.0.1, 13.0.0-13.1.1.4, 12.1.0-12.1.4, 11.6.1-11.6.3.4, and 11.5.2-11.5.8 are processing certain rare data sequences occurring in PPTP VPN traffic, the BIG-IP system may execute incorrect logic. The TMM may restart and produce a core file as a result of this condition. The BIG-IP system provisioned with the CGNAT module and configured with a virtual server using a PPTP profile is exposed to this vulnerability.
How severe is CVE-2019-6611?
CVE-2019-6611 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.77% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6611?
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.

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Source: NVD / NIST