The SSLHonorCipherOrder must be configured to disable weak encryption algorithms on the Tanium Server.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-234105	SRG-APP-000416	TANS-SV-000035	SV-234105r612749_rule	2021-12-20	2

Description
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.

ℹ️ Check
Access the Tanium Server interactively. Log on to the server with an account that has administrative privileges. Access the server's registry by typing: regedit <enter>. Navigate to HKEY_LOCAL_MACHINE >> SOFTWARE >> Wow6432Node >> Tanium >> Tanium Server. Verify the existence of a DWORD "SSLHonorCipherOrder" with a value of "0x00000001" (hex). If the DWORD "SSLHonorCipherOrder" does not exist with a value of "0x00000001" (hex), this is a finding.

ℹ️ Check

Access the Tanium Server interactively. Log on to the server with an account that has administrative privileges. Access the server's registry by typing: regedit <enter>. Navigate to HKEY_LOCAL_MACHINE >> SOFTWARE >> Wow6432Node >> Tanium >> Tanium Server. Verify the existence of a DWORD "SSLHonorCipherOrder" with a value of "0x00000001" (hex). If the DWORD "SSLHonorCipherOrder" does not exist with a value of "0x00000001" (hex), this is a finding.

✔️ Fix
Access the Tanium Server interactively. Log on to the server with an account that has administrative privileges. Access the server's registry by typing: regedit <enter>. Navigate to HKEY_LOCAL_MACHINE >> SOFTWARE >> Wow6432Node >> Tanium >> Tanium Server. Add or modify the DWORD "SSLHonorCipherOrder" to have a value of 0x00000001 (hex).