CVE-2020-5906

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-01 · updated 2026-06-17
Weakness: CWE-276

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.

Affected products

F5 BIG-IP APM: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
BIG-IP: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Big-Ip Analytics: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Networks, Inc. BIG-IP (AAM): from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
BIG-IP ASM: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 BIG-IP DNS: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Big-Ip Fraud Protection Service: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Big-Ip Global Traffic Manager: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Big-Ip Link Controller: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 BIG-IP (LTM): from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3
F5 Networks, Inc. BIG-IP (PEM): from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3

References

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