SOL16505 - NTP vulnerability CVE-2015-1798

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, you can revert any NTP configuration customizations that exposed the vulnerability.

Impact of action: The impact of the suggested workaround will depend on the specific environment. F5 recommends testing any such changes during a maintenance window with consideration to the possible impact on your specific environment.

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
• SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x)
• SOL3122: Using the BIG-IP Configuration utility to add an NTP server
• SOL14120: Defining advanced NTP configurations on the BIG-IP system (11.x - 12.x)
• SOL11237: Defining advanced NTP configurations on the BIG-IP system (9.x - 10.x)