CVE-2018-5513: Input Validation
On F5 BIG-IP 13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.3, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, a malformed TLS handshake causes TMM to crash leading to a disruption of service. This issue is only exposed on the data plane when Proxy SSL configuration is enabled. The control plane is not impacted by this issue.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
For F5 BIG-IP versions mentioned (13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.3, 11.6.1-11.6.3.1, 11.5.1-11.5.5, 11.2.1), disable Proxy SSL configuration unless it is required, since the crash is only exposed on the data plane when Proxy SSL is enabled.
F5 BIG-IP (TMM) - Proxy SSL Proxy SSL configuration = enabled -> disabled (if not required)
Event History
Frequently Asked Questions
What is the severity of CVE-2018-5513?
CVE-2018-5513 has been rated as a medium severity vulnerability due to its ability to cause service disruptions.
How do I fix CVE-2018-5513?
To fix CVE-2018-5513, update your F5 BIG-IP systems to the latest versions that address this vulnerability.
Which F5 BIG-IP versions are affected by CVE-2018-5513?
CVE-2018-5513 affects F5 BIG-IP versions 11.2.1 to 11.6.3.1, 12.1.0 to 12.1.3.3, and 13.0.0 to 13.1.0.3.
Is the control plane affected by CVE-2018-5513?
No, the control plane is not impacted by CVE-2018-5513; only the data plane is affected when Proxy SSL configuration is enabled.
What is the impact of CVE-2018-5513?
The impact of CVE-2018-5513 is a crash of the Traffic Management Microkernel (TMM), leading to service disruption.