CVE-2018-15320 — On BIG-IP 14

On BIG-IP 14.0.0-14.0.0.2 or 13.0.0-13.1.1.1, undisclosed traffic patterns may lead to denial of service conditions for the BIG-IP system. The configuration which exposes this condition is the BIG-IP self IP address which is part of a VLAN group and has the Port Lockdown setting

01What is this vulnerability?

On BIG-IP 14.0.0-14.0.0.2 or 13.0.0-13.1.1.1, undisclosed traffic patterns may lead to denial of service conditions for the BIG-IP system. The configuration which exposes this condition is the BIG-IP self IP address which is part of a VLAN group and has the Port Lockdown setting configured with anything other than "allow-all".

02Affected products

Vendor	Product	Versions
F5 Networks, Inc.	BIG	IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator) — 14.0.0-14.0.0.2, 13.0.0-13.1.1.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-10-31T14:00:00.000Z
• Last modified: 2024-08-05T09:46:25.460Z

09References

• support.f5.com — https://support.f5.com/csp/article/K72442354