CVE-2019-6647
MEDIUMCVSS 5.3/10EPSS 1.36%
Last modified
CVE-2019-6647 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, 12.1.0-12.1.4.1, 11.5.2-11.6.4, when processing authentication attempts for control-plane users MCPD leaks a small amount of memory. Under rare conditions attackers with access to the management interface could eventually deplete memory on the system.. EPSS estimates a 1.36% chance of exploitation in the next 30 days.
Description
On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, 12.1.0-12.1.4.1, 11.5.2-11.6.4, when processing authentication attempts for control-plane users MCPD leaks a small amount of memory. Under rare conditions attackers with access to the management interface could eventually deplete memory on the system.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Local Traffic Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Local Traffic Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Local Traffic Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Local Traffic Manager | 14.0.0 |
| F5 | Big-Ip Local Traffic Manager | 14.1.0 |
| F5 | Big-Ip Advanced Firewall Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Advanced Firewall Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | 14.0.0 |
| F5 | Big-Ip Advanced Firewall Manager | 14.1.0 |
| F5 | Big-Ip Application Acceleration Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Application Acceleration Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Application Acceleration Manager | 14.0.0 |
| F5 | Big-Ip Application Acceleration Manager | 14.1.0 |
| F5 | Big-Ip Analytics | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Analytics | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Analytics | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Analytics | 14.0.0 |
| F5 | Big-Ip Analytics | 14.1.0 |
| F5 | Big-Ip Access Policy Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Access Policy Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Access Policy Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Access Policy Manager | 14.0.0 |
| F5 | Big-Ip Access Policy Manager | 14.1.0 |
| F5 | Big-Ip Application Security Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Application Security Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Application Security Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Application Security Manager | 14.0.0 |
| F5 | Big-Ip Application Security Manager | 14.1.0 |
| F5 | Big-Ip Edge Gateway | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Edge Gateway | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Edge Gateway | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Edge Gateway | 14.0.0 |
| F5 | Big-Ip Edge Gateway | 14.1.0 |
| F5 | Big-Ip Fraud Protection Service | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Fraud Protection Service | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Fraud Protection Service | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Fraud Protection Service | 14.0.0 |
| F5 | Big-Ip Fraud Protection Service | 14.1.0 |
| F5 | Big-Ip Global Traffic Manager | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Global Traffic Manager | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Global Traffic Manager | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Global Traffic Manager | 14.0.0 |
| F5 | Big-Ip Global Traffic Manager | 14.1.0 |
| F5 | Big-Ip Link Controller | >= 11.5.1, <= 11.6.4 |
| F5 | Big-Ip Link Controller | >= 12.1.0, <= 12.1.4 |
| F5 | Big-Ip Link Controller | >= 13.0.0, <= 13.1.1 |
| F5 | Big-Ip Link Controller | 14.0.0 |
| F5 | Big-Ip Link Controller | 14.1.0 |
Showing 50 of 65 affected configurations. See NVD for the full list.
References
- https://support.f5.com/csp/article/K87920510Vendor Advisory
- https://support.f5.com/csp/article/K87920510Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-6647?
On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, 12.1.0-12.1.4.1, 11.5.2-11.6.4, when processing authentication attempts for control-plane users MCPD leaks a small amount of memory. Under rare conditions attackers with access to the management interface could eventually deplete memory on the system.
How severe is CVE-2019-6647?
CVE-2019-6647 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6647?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-6647?
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Scan your code nowSource: NVD / NIST