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tc Server HORIZON must remove all export ciphers to protect the confidentiality and integrity of transmitted information.


Finding ID Version Rule ID IA Controls Severity
V-240877 VRAU-TC-000925 SV-240877r879810_rule Medium
During the initial setup of a Transport Layer Security (TLS) connection to the web server, the client sends a list of supported cipher suites in order of preference. The web server will reply with the cipher suite it will use for communication from the client list. If an attacker can intercept the submission of cipher suites to the web server and place, as the preferred cipher suite, a weak export suite, the encryption used for the session becomes easy for the attacker to break, often within minutes to hours. An essential configuration file for tc Server is catalina.properties. Properly configured, tc Server will not provide the weaker, export ciphers.
VMware vRealize Automation 7.x tc Server Security Technical Implementation Guide 2023-10-03


Check Text ( C-44110r674373_chk )
At the command prompt, execute the following command:

grep bio-ssl.cipher.list /opt/vmware/horizon/workspace/conf/catalina.properties

If any export ciphers are listed, this is a finding.
Fix Text (F-44069r674374_fix)
Navigate to and open /opt/vmware/horizon/workspace/conf/catalina.properties.

Navigate to the "bio-ssl.cipher.list" setting.

Remove any export ciphers from "bio-ssl.cipher.list".

Note: To view a list of export ciphers, at the command prompt execute the following command:

openssl ciphers 'EXP'