Vulnerability Description
In F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, or 11.2.1 the Apache modules apache_auth_token_mod and mod_auth_f5_auth_token.cpp allow possible unauthenticated bruteforce on the em_server_ip authorization parameter to obtain which SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager (EM) and managed BIG-IP devices.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Local Traffic Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Analytics | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Access Policy Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Application Security Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Edge Gateway | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Global Traffic Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Link Controller | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Policy Enforcement Manager | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Webaccelerator | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Websafe | >= 11.5.1, <= 11.5.5 |
| F5 | Big-Ip Domain Name System | >= 11.5.1, <= 11.5.5 |
References
- https://support.f5.com/csp/article/K65355492Vendor Advisory
- https://support.f5.com/csp/article/K65355492Vendor Advisory
FAQ
What is CVE-2018-5506?
CVE-2018-5506 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, or 11.2.1 the Apache modules apache_auth_token_mod and mod_auth_f5_auth_token.cpp allow possible unauthenticated bruteforce on the em_server_...
How severe is CVE-2018-5506?
CVE-2018-5506 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-5506?
Check the references section above for vendor advisories and patch information. Affected products include: F5 Big-Ip Local Traffic Manager, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Access Policy Manager.