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CVE-2020-5938

MEDIUMCVSS 6.5/10EPSS 0.52%

Last modified

CVE-2020-5938 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. On BIG-IP 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when negotiating IPSec tunnels with configured, authenticated peers, the peer may negotiate a different key length than the BIG-IP configuration would otherwise allow.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

On BIG-IP 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when negotiating IPSec tunnels with configured, authenticated peers, the peer may negotiate a different key length than the BIG-IP configuration would otherwise allow.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
0.52%

40.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

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 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 Web Application Firewall>= 11.6.1, <= 11.6.5.2
F5Big-Ip Advanced Web Application Firewall>= 12.1.0, <= 12.1.5.2
F5Big-Ip Advanced Web Application Firewall>= 13.1.0, <= 13.1.3.4
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 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 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 Ddos Hybrid Defender>= 11.6.1, <= 11.6.5.2
F5Big-Ip Ddos Hybrid Defender>= 12.1.0, <= 12.1.5.2
F5Big-Ip Ddos Hybrid Defender>= 13.1.0, <= 13.1.3.4
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 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 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 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 Local Traffic Manager>= 11.6.1, <= 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 Policy Enforcement Manager>= 11.6.1, <= 11.6.5.2
F5Big-Ip Policy Enforcement Manager>= 12.1.0, <= 12.1.5.2
F5Big-Ip Policy Enforcement Manager>= 13.1.0, <= 13.1.3.4
F5Ssl Orchestrator>= 11.6.1, <= 11.6.5.2
F5Ssl Orchestrator>= 12.1.0, <= 12.1.5.2
F5Ssl Orchestrator>= 13.1.0, <= 13.1.3.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5938?
On BIG-IP 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when negotiating IPSec tunnels with configured, authenticated peers, the peer may negotiate a different key length than the BIG-IP configuration would otherwise allow.
How severe is CVE-2020-5938?
CVE-2020-5938 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5938?
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-2020-5938?

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

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Source: NVD / NIST