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CVE-2020-5906

HIGHCVSS 8.1/10EPSS 1.19%

Last modified

CVE-2020-5906 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. In versions 13.1.0-13.1.3.3, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, the BIG-IP system does not properly enforce the access controls for the scp.blacklist files. This allows Admin and Resource Admin users with Secure Copy (SCP) protocol access to read and overwrite blacklisted files via SCP.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

In versions 13.1.0-13.1.3.3, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, the BIG-IP system does not properly enforce the access controls for the scp.blacklist files. This allows Admin and Resource Admin users with Secure Copy (SCP) protocol access to read and overwrite blacklisted files via SCP.

Metrics

CVSS 3.1
8.1/10

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

EPSS Probability
1.19%

63.9th 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
F5Big-Ip Access Policy Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Access Policy Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Advanced Firewall Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Advanced Firewall Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Advanced Firewall Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Analytics>= 11.6.1, <= 11.6.5
F5Big-Ip Analytics>= 12.1.0, <= 12.1.5
F5Big-Ip Analytics>= 13.1.0, <= 13.1.3
F5Big-Ip Application Acceleration Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Application Acceleration Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Application Acceleration Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Application Security Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Application Security Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Application Security Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Domain Name System>= 11.6.1, <= 11.6.5
F5Big-Ip Domain Name System>= 12.1.0, <= 12.1.5
F5Big-Ip Domain Name System>= 13.1.0, <= 13.1.3
F5Big-Ip Fraud Protection Service>= 11.6.1, <= 11.6.5
F5Big-Ip Fraud Protection Service>= 12.1.0, <= 12.1.5
F5Big-Ip Fraud Protection Service>= 13.1.0, <= 13.1.3
F5Big-Ip Global Traffic Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Global Traffic Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Global Traffic Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Link Controller>= 11.6.1, <= 11.6.5
F5Big-Ip Link Controller>= 12.1.0, <= 12.1.5
F5Big-Ip Link Controller>= 13.1.0, <= 13.1.3
F5Big-Ip Local Traffic Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Local Traffic Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Local Traffic Manager>= 13.1.0, <= 13.1.3
F5Big-Ip Policy Enforcement Manager>= 11.6.1, <= 11.6.5
F5Big-Ip Policy Enforcement Manager>= 12.1.0, <= 12.1.5
F5Big-Ip Policy Enforcement Manager>= 13.1.0, <= 13.1.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5906?
In versions 13.1.0-13.1.3.3, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, the BIG-IP system does not properly enforce the access controls for the scp.blacklist files. This allows Admin and Resource Admin users with Secure Copy (SCP) protocol access to read and overwrite blacklisted files via SCP.
How severe is CVE-2020-5906?
CVE-2020-5906 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5906?
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-2020-5906?

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

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Source: NVD / NIST