The SSH daemon must set a timeout count on idle sessions.

From VMware vSphere ESXi 6.0 Security Technical Implementation Guide

Part of SRG-OS-000480-VMM-002000

Associated with: CCI-000366

SV-77711r1_rule The SSH daemon must set a timeout count on idle sessions.

Vulnerability discussion

This ensures a user login will be terminated as soon as the "ClientAliveCountMax" is reached.

Check content

To verify the ClientAliveCountMax setting, run the following command: # grep -i "^ClientAliveCountMax" /etc/ssh/sshd_config If there is no output or the output is not exactly "ClientAliveCountMax 3", this is a finding.

Fix text

To set the ClientAliveCountMax setting, add or correct the following line in "/etc/ssh/sshd_config": ClientAliveCountMax 3

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.

Powered by sagemincer