Detections
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ESXI-65-000010 - The ESXi host SSH daemon must use DoD-approved encryption to protect the confidentiality of remote access sessions.

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

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Information

Approved algorithms should impart some level of confidence in their implementation. Limit the ciphers to those algorithms which are FIPS-approved. Counter (CTR) mode is also preferred over cipher-block chaining (CBC) mode.

Note: This does not imply FIPS 140-2 validation.

Solution

Limit the ciphers to those algorithms which are FIPS-approved. Counter (CTR) mode is also preferred over cipher-block chaining (CBC) mode.

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':

Ciphers aes128-ctr,aes192-ctr,aes256-ctr

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-5_Y20M04_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-13, CAT|II, CCI|CCI-000068, Rule-ID|SV-104053r1_rule, STIG-ID|ESXI-65-000010, Vuln-ID|V-93967

Plugin: Unix

Control ID: c75059f4c353a280b19956b4390d341000b7cfa4b88014acb0eb4a57582bb238