CVE-2018-5538
3.7 · LOWOverview
CVE-2018-5538 is a low-severity vulnerability affecting f5 big-ip_domain_name_system. It was published on July 25, 2018 and has a CVSS 3.0 base score of 3.7 (LOW).
This vulnerability has a CVSS 3.0 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
On F5 BIG-IP DNS 13.1.0-13.1.0.7, 12.1.3-12.1.3.5, DNS Express / DNS Zones accept NOTIFY messages on the management interface from source IP addresses not listed in the 'Allow NOTIFY From' configuration parameter when the db variable "dnsexpress.notifyport" is set to any value other than the default of "0".
Remediation
Check the references section for vendor advisories and patches from f5. Update big-ip_domain_name_system 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_domain_name_system | 12.1.3 | Affected |
| f5 | big-ip_global_traffic_manager | 12.1.3 | Affected |
| f5 | big-ip_local_traffic_manager | 12.1.3 | Affected |
| f5 | big-ip_link_controller | 12.1.3 | Affected |
Frequently Asked Questions
What is CVE-2018-5538?
CVE-2018-5538 is a low-severity vulnerability affecting f5 big-ip_domain_name_system. It was published on July 25, 2018 and has a CVSS 3.0 base score of 3.7 (LOW).
How severe is CVE-2018-5538?
This vulnerability has a CVSS 3.0 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-5538?
Check the references section for vendor advisories and patches from f5. Update big-ip_domain_name_system 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-2018-5538?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-5538 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.
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