| name | cis-ubuntu2004-v300-2-2-3 |
| description | Ensure talk client is not installed |
| category | cis-networking |
| version | 3.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-20.04","services"] |
| cis_id | 2.2.3 |
| cis_benchmark | CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
2.2.3 Ensure talk client is not installed (Automated)
Profile
- Level 1 - Server
- Level 1 - Workstation
Description
The talk software makes it possible for users to send and receive messages across systems through a terminal session. The talk client, which allows initialization of talk sessions, is installed by the talk package.
Rationale
The software presents a security risk as it uses unencrypted protocols for communication.
Audit Procedure
Command Line
Run the following command to verify talk is not installed:
Verify talk is not installed.
Expected Result
talk package should not be installed.
Remediation
Command Line
Run the following command to remove talk:
Default Value
talk is not installed by default.
References
- NIST SP 800-53 Rev. 5: CM-7
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 4.8 Uninstall or Disable Unnecessary Services on Enterprise Assets and Software | | x | x |
| v7 | 9.2 Ensure Only Approved Ports, Protocols and Services Are Running | | x | x |
MITRE ATT&CK Mappings: T1203, T1543, T1543.002 | TA0006, TA0008 | M1041, M1042