SOL17244 - Linux kernel vulnerability CVE-2015-1593

Note: As of February 17, 2015, AskF5 Security Advisory articles include the Severity value. Security Advisory articles published before this date do not list a Severity value.

• In BIG-IP 10.x, some platforms are running 32-bit Linux kernel and some platforms are running 64-bit, depending on their hardware capabilities. To determine if your BIG-IP 10.x system is running 32-bit or 64-bit Linux kernel, you can enter the uname -icommand from the command line and observe the output. If the output contains the x86_64 string, the system is running 64-bit Linux kernel and is vulnerable to this issue. If the output contains thei386 string, the system is running 32-bit Linux kernel and is not vulnerable to this issue.

Recommended Action

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

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

To mitigate this vulnerability for affected F5 products, you should only permit management access to F5 products over a secure network and limit shell access to trusted users. For more information about securing access to BIG-IP and Enterprise Manager systems, refer to SOL13309: Restricting access to the Configuration utility by source IP address (11.x) and SOL13092: Overview of securing access to the BIG-IP 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