CVE-2019-6679

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-12-23 · updated 2026-06-17
Weakness: CWE-59

Description

On BIG-IP versions 15.0.0-15.0.1, 14.1.0.2-14.1.2.2, 14.0.0.5-14.0.1, 13.1.1.5-13.1.3.1, 12.1.4.1-12.1.5, 11.6.4-11.6.5, and 11.5.9-11.5.10, the access controls implemented by scp.whitelist and scp.blacklist are not properly enforced for paths that are symlinks. This allows authenticated users with SCP access to overwrite certain configuration files that would otherwise be restricted.

Affected products

F5 BIG-IP APM: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
BIG-IP: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Analytics: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Networks, Inc. BIG-IP (AAM): from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
BIG-IP ASM: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 BIG-IP DNS: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Edge Gateway: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Fraud Protection Service: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Global Traffic Manager: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Link Controller: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 BIG-IP (LTM): from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Networks, Inc. BIG-IP (PEM): from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1
F5 Big-Ip Webaccelerator: from 11.5.9 through 11.5.10; from 11.6.4 before 11.6.5.1; from 12.1.4.1 through 12.1.5; from 13.1.1.5 before 13.1.3.2; from 14.0.0.5 before 14.0.1.1; from 14.1.0.2 before 14.1.2.3 — fixed in 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3, 15.0.1.1

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; BIG-IP 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Big-Ip Analytics 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Networks, Inc. BIG-IP (AAM) 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; BIG-IP ASM 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 BIG-IP DNS 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Big-Ip Edge Gateway 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Big-Ip Fraud Protection Service 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Big-Ip Global Traffic Manager 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Big-Ip Link Controller 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 BIG-IP (LTM) 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3; F5 Networks, Inc. BIG-IP (PEM) 11.6.5.1, 13.1.3.2, 14.0.1.1, 14.1.2.3. Check the vendor advisory for mitigations.

References

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