CVE-2018-15321

Severity: medium (CVSS 4.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-10-31 · updated 2026-06-17
Weakness: CWE-269

Description

When BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.1.0-2.3.0, or Enterprise Manager 3.1.1 is licensed for Appliance Mode, Admin and Resource administrator roles can by-pass BIG-IP Appliance Mode restrictions to overwrite critical system files. Attackers of high privilege level are able to overwrite critical system files which bypasses security controls in place to limit TMSH commands. This is possible with an administrator or resource administrator roles when granted TMSH. Resource administrator roles must have TMSH access in order to perform this attack.

Affected products

F5 BIG-IP APM: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
BIG-IP: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Analytics: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Networks, Inc. BIG-IP (AAM): from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 BIG-IP DNS: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Edge Gateway: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Fraud Protection Service: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Global Traffic Manager: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Link Controller: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 BIG-IP (LTM): from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Networks, Inc. BIG-IP (PEM): from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Protocol Security Module: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 Big-Ip Webaccelerator: from 11.2.1 through 11.5.6; from 11.6.0 through 11.6.3.2; from 12.1.0 through 12.1.3.5; from 13.0.0 through 13.1.0.7; from 14.0.0 through 14.0.0.2
F5 BIG-IQ: from 5.0.0 through 5.4.0; 4.6.0
F5 Networks, Inc. BIG-IQ Cloud and Orchestration: 1.0.0
F5 Networks, Inc. Enterprise Manager: 3.1.1
F5 Networks, Inc. iWorkflow: from 2.1.0 through 2.3.0

References

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