CVE-2018-15321
4.9 · MEDIUMOverview
CVE-2018-15321 is a medium-severity vulnerability affecting f5 big-ip_local_traffic_manager. It was published on October 31, 2018 and has a CVSS 3.0 base score of 4.9 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from f5. Update big-ip_local_traffic_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| f5 | big-ip_local_traffic_manager | 11.2.1 | Affected |
| f5 | big-ip_advanced_firewall_manager | 11.2.1 | Affected |
| f5 | big-ip_application_acceleration_manager | 11.2.1 | Affected |
| f5 | big-ip_analytics | 11.2.1 | Affected |
| f5 | big-ip_access_policy_manager | 11.2.1 | Affected |
| f5 | big-ip_protocol_security_module | 11.2.1 | Affected |
| f5 | big-ip_domain_name_system | 11.2.1 | Affected |
| f5 | big-ip_edge_gateway | 11.2.1 | Affected |
| f5 | big-ip_fraud_protection_service | 11.2.1 | Affected |
| f5 | big-ip_global_traffic_manager | 11.2.1 | Affected |
| f5 | big-ip_link_controller | 11.2.1 | Affected |
| f5 | big-ip_policy_enforcement_manager | 11.2.1 | Affected |
| f5 | big-ip_webaccelerator | 11.2.1 | Affected |
| f5 | big-iq_centralized_management | 5.0.0 | Affected |
| f5 | iworkflow | 2.1.0 | Affected |
Frequently Asked Questions
What is CVE-2018-15321?
CVE-2018-15321 is a medium-severity vulnerability affecting f5 big-ip_local_traffic_manager. It was published on October 31, 2018 and has a CVSS 3.0 base score of 4.9 (MEDIUM).
How severe is CVE-2018-15321?
This vulnerability has a CVSS 3.0 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-15321?
Check the references section for vendor advisories and patches from f5. Update big-ip_local_traffic_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-15321?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-15321 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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