The SLES for vRealize must protect the confidentiality and integrity of transmitted information.

From VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

Associated with: CCI-002418

SV-99345r1_rule The SLES for vRealize must protect the confidentiality and integrity of transmitted information.

Vulnerability discussion

Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Check content

Check the SSH daemon configuration for DoD-approved encryption to protect the confidentiality of SSH remote connections by performing the following commands: Check the Cipher setting in the "sshd_config" file. # grep -i Ciphers /etc/ssh/sshd_config | grep -v '#' The output must contain either none or any number of the following algorithms: aes128-ctr, aes256-ctr. If the output contains an algorithm not listed above, this is a finding. Expected Output: Ciphers aes256-ctr,aes128-ctr

Fix text

Update the Ciphers directive with the following command: # sed -i "/^[^#]*Ciphers/ c\Ciphers aes256-ctr,aes128-ctr" /etc/ssh/sshd_config Save and close the file. Restart the sshd process: # service sshd restart

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