CVE-2019-6638
MEDIUMCVSS 6.5/10EPSS 1.99%
Last modified
CVE-2019-6638 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. On BIG-IP 14.1.0-14.1.0.5 and 14.0.0-14.0.0.4, Malformed http requests made to an undisclosed iControl REST endpoint can lead to infinite loop of the restjavad process.. EPSS estimates a 1.99% chance of exploitation in the next 30 days.
Description
On BIG-IP 14.1.0-14.1.0.5 and 14.0.0-14.0.0.4, Malformed http requests made to an undisclosed iControl REST endpoint can lead to infinite loop of the restjavad process.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Local Traffic Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Analytics | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Access Policy Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Application Security Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Domain Name System | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Edge Gateway | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Edge Gateway | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Global Traffic Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Link Controller | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Link Controller | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Webaccelerator | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Webaccelerator | >= 14.1.0, < 14.1.0.6 |
| F5 | Big-Ip Fraud Protection Service | >= 14.0.0, < 14.0.0.5 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, < 14.1.0.6 |
References
- http://www.securityfocus.com/bid/109106Third Party Advisory, VDB Entry
- https://support.f5.com/csp/article/K67825238Vendor Advisory
- http://www.securityfocus.com/bid/109106Third Party Advisory, VDB Entry
- https://support.f5.com/csp/article/K67825238Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-6638?
On BIG-IP 14.1.0-14.1.0.5 and 14.0.0-14.0.0.4, Malformed http requests made to an undisclosed iControl REST endpoint can lead to infinite loop of the restjavad process.
How severe is CVE-2019-6638?
CVE-2019-6638 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.99% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6638?
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.
Related CVEs from 2019
- CVE-2019-6632On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4,…
- CVE-2019-6633On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4,…4.4
- CVE-2019-6634On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4,…
- CVE-2019-6635On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4,…4.4
- CVE-2019-6636On BIG-IP (AFM, ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.…
- CVE-2019-6637On BIG-IP (ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.…
- CVE-2019-6639On BIG-IP (AFM, PEM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.…4.8
- CVE-2019-6640On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4,…5.3
- CVE-2019-6641On BIG-IP 12.1.0-12.1.4.1, undisclosed requests can cause iC…6.5
- CVE-2019-6642In BIG-IP 15.0.0, 14.0.0-14.1.0.5, 13.0.0-13.1.1.5, 12.1.0-1…8.8
- CVE-2019-6643On versions 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2,…7.5
- CVE-2019-6644Similar to the issue identified in CVE-2018-12120, on versio…9.4
Are you affected by CVE-2019-6638?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST