SOL03331206 - NTP vulnerability CVE-2016-4955

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 theVersions 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.

To mitigate this vulnerability, you can configure multiple time sources to mitigate the risk of any single time source being impacted by this attack. Ingress filtering by an upstream firewall, as recommended in BCP-38, can reduce the risk of exposure to spoofed packets.

Impact of action: Performing the suggested action should not have a negative impact on your system.

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
• SOL15106: Managing BIG-IQ product hotfixes
• SOL15113: BIG-IQ hotfix matrix