SOL13304944 - NTP vulnerability CVE-2015-7974

ID SOL13304944
Type f5
Reporter f5
Modified 2016-10-31T00:00:00


Vulnerability Recommended Actions

If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Versions known to be not vulnerable column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists.

BIG-IP, BIG-IQ, and Enterprise Manager

To mitigate this vulnerability, do not configure NTP to accept symmetric key encryption.


If you choose to use symmetric keys to authenticate time packets in an untrusted environment where ephemeral time servers can be created, or if it is expected that malicious time servers will participate in an NTP broadcast domain, limit the number of systems that participate in the shared-key group.

Supplemental Information

  • SOL9970: Subscribing to email notifications regarding F5 products
  • SOL9957: Creating a custom RSS feed to view new and updated documents
  • SOL4602: Overview of the F5 security vulnerability response policy
  • SOL4918: Overview of the F5 critical issue hotfix policy
  • SOL167: Downloading software and firmware from F5
  • SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x)
  • SOL10025: Managing BIG-IP product hotfixes (10.x)
  • SOL9502: BIG-IP hotfix matrix
  • SOL10322: FirePass hotfix matrix
  • SOL12766: ARX hotfix matrix