SOL65271605 - NTP vulnerability CVE-2016-1549

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.

F5 responds to vulnerabilities in accordance with the Severity values published in the previous table. TheSeverity values and other security vulnerability parameters are defined in SOL4602: Overview of the F5 security vulnerability response policy.

To mitigate this vulnerability, if configured, disable trustedkey authentication for NTP and/or ensure that the private key is known only to trusted hosts. Additionally, you can configure multiple time sources to mitigate the risk of any single time source being impacted by this attack.

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
• SOL4918: Overview of the F5 critical issue hotfix policy
• SOL167: Downloading software and firmware from F5
• NTP FAQ - Advanced Configuration

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