ESXI-65-000028 - The ESXi host SSH daemon must limit connections to a single session.

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Information

The SSH protocol has the ability to provide multiple sessions over a single connection without reauthentication. A compromised client could use this feature to establish additional sessions to a system without consent or knowledge of the user.

Solution

From an SSH session connected to the ESXi host, or from the ESXi shell, add or correct the following line in '/etc/ssh/sshd_config':

MaxSessions 1

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-5_Y21M10_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-10, CAT|II, CCI|CCI-000366, Rule-ID|SV-207629r388482_rule, STIG-ID|ESXI-65-000028, STIG-Legacy|SV-104089, STIG-Legacy|V-94003, Vuln-ID|V-207629

Plugin: Unix

Control ID: 0cd2db9fe1d4a523ea7e2505bcf30e4079b620cdf4815e096b524a4e20ebf2cf