CVE-2018-5518
5.4 · MEDIUMOverview
CVE-2018-5518 is a medium-severity vulnerability affecting f5 big-ip_local_traffic_manager. It was published on May 2, 2018 and has a CVSS 3.0 base score of 5.4 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
On F5 BIG-IP 13.0.0-13.1.0.5 or 12.0.0-12.1.3.3, malicious root users with access to a VCMP guest can cause a disruption of service on adjacent VCMP guests running on the same host. Exploiting this vulnerability causes the vCMPd process on the adjacent VCMP guest to restart and produce a core file. This issue is only exploitable on a VCMP guest which is operating in "host-only" or "bridged" mode. VCMP guests which are "isolated" are not impacted by this issue and do not provide mechanism to exploit the vulnerability. Guests which are deployed in "Appliance Mode" may be impacted however the exploit is not possible from an Appliance Mode guest. To exploit this vulnerability root access on a guest system deployed as "host-only" or "bridged" mode is required.
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 | 12.0.0 | Affected |
| f5 | big-ip_application_acceleration_manager | 12.0.0 | Affected |
| f5 | big-ip_advanced_firewall_manager | 12.0.0 | Affected |
| f5 | big-ip_analytics | 12.0.0 | Affected |
| f5 | big-ip_access_policy_manager | 12.0.0 | Affected |
| f5 | big-ip_application_security_manager | 12.0.0 | Affected |
| f5 | big-ip_edge_gateway | 12.0.0 | Affected |
| f5 | big-ip_global_traffic_manager | 12.0.0 | Affected |
| f5 | big-ip_link_controller | 12.0.0 | Affected |
| f5 | big-ip_policy_enforcement_manager | 12.0.0 | Affected |
| f5 | big-ip_webaccelerator | 12.0.0 | Affected |
| f5 | big-ip_websafe | 12.0.0 | Affected |
| f5 | big-ip_domain_name_system | 12.0.0 | Affected |
Frequently Asked Questions
What is CVE-2018-5518?
CVE-2018-5518 is a medium-severity vulnerability affecting f5 big-ip_local_traffic_manager. It was published on May 2, 2018 and has a CVSS 3.0 base score of 5.4 (MEDIUM).
How severe is CVE-2018-5518?
This vulnerability has a CVSS 3.0 base score of 5.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-5518?
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-2018-5518?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-5518 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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