CVE-2018-5506: Critical severity F5 Big-ip Local Traffic Manager vulnerability

Q: What is the severity of CVE-2018-5506?

CVE-2018-5506 is considered a high-severity vulnerability due to the potential for unauthenticated brute force attacks.

Q: How do I fix CVE-2018-5506?

To fix CVE-2018-5506, upgrade to F5 BIG-IP versions 13.0.1, 12.1.3.2, 12.1.2.4, or later.

Q: Which F5 BIG-IP versions are affected by CVE-2018-5506?

CVE-2018-5506 affects F5 BIG-IP versions 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, and 11.2.1.

Q: What type of attacks can CVE-2018-5506 facilitate?

CVE-2018-5506 can facilitate unauthorized access through brute force attempts on the em_server_ip authorization parameter.

Q: Is user authentication compromised in CVE-2018-5506?

Yes, CVE-2018-5506 can allow potential attackers to bypass user authentication processes.

Published Apr 13, 2018

Updated

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 apacheauthtokenmod and modauthf5authtoken.cpp allow possible unauthenticated bruteforce on the emserverip authorization parameter to obtain which SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager (EM) and managed BIG-IP devices.

Affected Software

65 affected components

F5 Big-ip Local Traffic Manager>=11.5.1<=11.5.5

F5 Big-ip Local Traffic Manager>=12.1.0<=12.1.3.1

F5 Big-ip Local Traffic Manager=11.2.1

F5 Big-ip Local Traffic Manager=11.6.1

F5 Big-ip Local Traffic Manager=13.0.0

F5 Big-ip Application Acceleration Manager>=11.5.1<=11.5.5

F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.3.1

F5 Big-ip Application Acceleration Manager=11.2.1

F5 Big-ip Application Acceleration Manager=11.6.1

F5 Big-ip Application Acceleration Manager=13.0.0

F5 BIG-IP Advanced Firewall Manager>=11.5.1<=11.5.5

F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.3.1

F5 BIG-IP Advanced Firewall Manager=11.2.1

F5 BIG-IP Advanced Firewall Manager=11.6.1

F5 BIG-IP Advanced Firewall Manager=13.0.0

F5 BIG-IP Analytics>=11.5.1<=11.5.5

F5 BIG-IP Analytics>=12.1.0<=12.1.3.1

F5 BIG-IP Analytics=11.2.1

F5 BIG-IP Analytics=11.6.1

F5 BIG-IP Analytics=13.0.0

F5 BIG-IP Access Policy Manager>=11.5.1<=11.5.5

F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.3.1

F5 BIG-IP Access Policy Manager=11.2.1

F5 BIG-IP Access Policy Manager=11.6.1

F5 BIG-IP Access Policy Manager=13.0.0

F5 BIG-IP Application Security Manager>=11.5.1<=11.5.5

F5 BIG-IP Application Security Manager>=12.1.0<=12.1.3.1

F5 BIG-IP Application Security Manager=11.2.1

F5 BIG-IP Application Security Manager=11.6.1

F5 BIG-IP Application Security Manager=13.0.0

F5 BIG-IP Edge Gateway>=11.5.1<=11.5.5

F5 BIG-IP Edge Gateway>=12.1.0<=12.1.3.1

F5 BIG-IP Edge Gateway=11.2.1

F5 BIG-IP Edge Gateway=11.6.1

F5 BIG-IP Edge Gateway=13.0.0

F5 Big-ip Global Traffic Manager>=11.5.1<=11.5.5

F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.3.1

F5 Big-ip Global Traffic Manager=11.2.1

F5 Big-ip Global Traffic Manager=11.6.1

F5 Big-ip Global Traffic Manager=13.0.0

F5 Big-ip Link Controller>=11.5.1<=11.5.5

F5 Big-ip Link Controller>=12.1.0<=12.1.3.1

F5 Big-ip Link Controller=11.2.1

F5 Big-ip Link Controller=11.6.1

F5 Big-ip Link Controller=13.0.0

F5 Big-ip Policy Enforcement Manager>=11.5.1<=11.5.5

F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.3.1

F5 Big-ip Policy Enforcement Manager=11.2.1

F5 Big-ip Policy Enforcement Manager=11.6.1

F5 Big-ip Policy Enforcement Manager=13.0.0

F5 Big-ip Webaccelerator>=11.5.1<=11.5.5

F5 Big-ip Webaccelerator>=12.1.0<=12.1.3.1

F5 Big-ip Webaccelerator=11.2.1

F5 Big-ip Webaccelerator=11.6.1

F5 Big-ip Webaccelerator=13.0.0

F5 Big-ip Websafe>=11.5.1<=11.5.5

F5 Big-ip Websafe>=12.1.0<=12.1.3.1

F5 Big-ip Websafe=11.2.1

F5 Big-ip Websafe=11.6.1

F5 Big-ip Websafe=13.0.0

F5 Big-ip Domain Name System>=11.5.1<=11.5.5

F5 Big-ip Domain Name System>=12.1.0<=12.1.3.1

F5 Big-ip Domain Name System=11.2.1

F5 Big-ip Domain Name System=11.6.1

F5 Big-ip Domain Name System=13.0.0

Event History

Apr 13, 2018

CVE Published

via MITRE·01:00 PM

Data Sourced

via MITRE·01:00 PM

DescriptionWeakness

Data Sourced

via NVD·01:29 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of CVE-2018-5506?

CVE-2018-5506 is considered a high-severity vulnerability due to the potential for unauthenticated brute force attacks.

How do I fix CVE-2018-5506?

To fix CVE-2018-5506, upgrade to F5 BIG-IP versions 13.0.1, 12.1.3.2, 12.1.2.4, or later.

Which F5 BIG-IP versions are affected by CVE-2018-5506?