F5 BIG-IP APM CVE-2019-6661 Denial of Service Vulnerability

Risk

Medium

Date Discovered

November 15, 2019

Description

F5 BIG-IP APM is prone to a denial-of-service vulnerability. Attackers can exploit this issue to cause excessive resource consumption, resulting in a denial-of-service condition. BIG-IP APM 14.1.0 through 14.1.2, 14.0.0 through 14.0.1, 13.0.0 through 13.1.3, 12.1.0 through 12.1.4, and 11.6.2 through 11.6.5 are vulnerable.

Technologies Affected

  • F5 BIG-IP APM 11.6.2
  • F5 BIG-IP APM 11.6.3
  • F5 BIG-IP APM 11.6.4
  • F5 BIG-IP APM 11.6.5
  • F5 BIG-IP APM 12.1.0
  • F5 BIG-IP APM 12.1.1
  • F5 BIG-IP APM 12.1.2
  • F5 BIG-IP APM 12.1.3
  • F5 BIG-IP APM 12.1.3.2
  • F5 BIG-IP APM 12.1.3.4
  • F5 BIG-IP APM 12.1.3.6
  • F5 BIG-IP APM 12.1.3.7
  • F5 BIG-IP APM 12.1.4
  • F5 BIG-IP APM 13.0.0
  • F5 BIG-IP APM 13.0.1
  • F5 BIG-IP APM 13.1.0
  • F5 BIG-IP APM 13.1.0.4
  • F5 BIG-IP APM 13.1.0.5
  • F5 BIG-IP APM 13.1.0.6
  • F5 BIG-IP APM 13.1.0.8
  • F5 BIG-IP APM 13.1.1
  • F5 BIG-IP APM 13.1.1.2
  • F5 BIG-IP APM 13.1.1.3
  • F5 BIG-IP APM 13.1.1.4
  • F5 BIG-IP APM 13.1.1.5
  • F5 BIG-IP APM 13.1.3
  • F5 BIG-IP APM 14.0.0
  • F5 BIG-IP APM 14.0.0.3
  • F5 BIG-IP APM 14.0.0.4
  • F5 BIG-IP APM 14.0.0.5
  • F5 BIG-IP APM 14.0.1
  • F5 BIG-IP APM 14.1.0
  • F5 BIG-IP APM 14.1.0.1
  • F5 BIG-IP APM 14.1.0.2
  • F5 BIG-IP APM 14.1.0.5
  • F5 BIG-IP APM 14.1.0.6
  • F5 BIG-IP APM 14.1.2

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Updates are available. Please see the references or vendor advisory for more information.

References

Credits

The vendor reported this issue.


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