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CVE-2019-6631

HIGHCVSS 7.5/10EPSS 2.53%

Last modified

CVE-2019-6631 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.. EPSS estimates a 2.53% chance of exploitation in the next 30 days.

Description

On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.

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 Local Traffic Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Application Acceleration Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Advanced Firewall Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Analytics>= 11.5.2, <= 11.6.4
F5Big-Ip Access Policy Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Application Security Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Domain Name System>= 11.5.2, <= 11.6.4
F5Big-Ip Edge Gateway>= 11.5.2, <= 11.6.4
F5Big-Ip Global Traffic Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Link Controller>= 11.5.2, <= 11.6.4
F5Big-Ip Policy Enforcement Manager>= 11.5.2, <= 11.6.4
F5Big-Ip Webaccelerator>= 11.5.2, <= 11.6.4
F5Big-Ip Websafe>= 11.5.2, <= 11.6.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6631?
On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.
How severe is CVE-2019-6631?
CVE-2019-6631 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-2019-6631?
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