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CVE-2020-5933

HIGHCVSS 7.5/10EPSS 1.05%

Last modified

CVE-2020-5933 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, when a BIG-IP system that has a virtual server configured with an HTTP compression profile processes compressed HTTP message payloads that require deflation, a Slowloris-style attack can trigger an out-of-memory condition on the BIG-IP system.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

On versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, when a BIG-IP system that has a virtual server configured with an HTTP compression profile processes compressed HTTP message payloads that require deflation, a Slowloris-style attack can trigger an out-of-memory condition on the BIG-IP system.

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
1.05%

59.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Access Policy Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Access Policy Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Access Policy Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Access Policy Manager>= 15.1.0, < 15.1.1
F5Big-Ip Advanced Firewall Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Advanced Firewall Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Advanced Firewall Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Advanced Firewall Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Advanced Firewall Manager>= 15.1.0, < 15.1.1
F5Big-Ip Analytics>= 11.6.1, < 11.6.5.2
F5Big-Ip Analytics>= 12.1.0, < 12.1.5.2
F5Big-Ip Analytics>= 13.1.0, <= 13.1.3.4
F5Big-Ip Analytics>= 14.1.0, < 14.1.2.4
F5Big-Ip Analytics>= 15.1.0, < 15.1.1
F5Big-Ip Application Acceleration Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Application Acceleration Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Application Acceleration Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Application Acceleration Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Application Acceleration Manager>= 15.1.0, < 15.1.1
F5Big-Ip Application Security Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Application Security Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Application Security Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Application Security Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Application Security Manager>= 15.1.0, < 15.1.1
F5Big-Ip Domain Name System>= 11.6.1, < 11.6.5.2
F5Big-Ip Domain Name System>= 12.1.0, < 12.1.5.2
F5Big-Ip Domain Name System>= 13.1.0, <= 13.1.3.4
F5Big-Ip Domain Name System>= 14.1.0, < 14.1.2.4
F5Big-Ip Domain Name System>= 15.1.0, < 15.1.1
F5Big-Ip Fraud Protection Service>= 11.6.1, < 11.6.5.2
F5Big-Ip Fraud Protection Service>= 12.1.0, < 12.1.5.2
F5Big-Ip Fraud Protection Service>= 13.1.0, <= 13.1.3.4
F5Big-Ip Fraud Protection Service>= 14.1.0, < 14.1.2.4
F5Big-Ip Fraud Protection Service>= 15.1.0, < 15.1.1
F5Big-Ip Global Traffic Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Global Traffic Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Global Traffic Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Global Traffic Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Global Traffic Manager>= 15.1.0, < 15.1.1
F5Big-Ip Link Controller>= 11.6.1, < 11.6.5.2
F5Big-Ip Link Controller>= 12.1.0, < 12.1.5.2
F5Big-Ip Link Controller>= 13.1.0, <= 13.1.3.4
F5Big-Ip Link Controller>= 14.1.0, < 14.1.2.4
F5Big-Ip Link Controller>= 15.1.0, < 15.1.1
F5Big-Ip Local Traffic Manager>= 11.5.2, < 11.6.5.2
F5Big-Ip Local Traffic Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Local Traffic Manager>= 13.1.0, <= 13.1.3.4
F5Big-Ip Local Traffic Manager>= 14.1.0, < 14.1.2.4
F5Big-Ip Local Traffic Manager>= 15.1.0, < 15.1.1

Showing 50 of 55 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5933?
On versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, when a BIG-IP system that has a virtual server configured with an HTTP compression profile processes compressed HTTP message payloads that require deflation, a Slowloris-style attack can trigger an out-of-memory condition on the BIG-IP system.
How severe is CVE-2020-5933?
CVE-2020-5933 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5933?
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-2020-5933?

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

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Source: NVD / NIST