CCE-95764-7Platform: cpe:/o:ubuntu:ubuntu_linux:20.04 | Date: (C)2024-02-12 (M)2024-02-12 |
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter). The crontab command is used to maintain crontab files for individual users. Crontab is the program used to install, remove, or list the tables used to drive the cron daemon. This is similar to the task scheduler used in other operating systems. When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to -1. The AUID representation is an unsigned 32-bit integer, which equals 4294967295. The audit system interprets -1, 4294967295, and unset in the same way.
Fixtext:
Add or update the following rules in the "/etc/audit/audit.rules" file:
-a always,exit -F path=/usr/bin/crontab -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-crontab
Parameter:
[Yes/No]
Technical Mechanism:
Add or update the following rules in the "/etc/audit/audit.rules" file:
-a always,exit -F path=/usr/bin/crontab -F perm=x -F auid =1000 -F auid!=4294967295 -k privileged-crontab
CCSS Severity: | CCSS Metrics: |
CCSS Score : 5.9 | Attack Vector: LOCAL |
Exploit Score: 2.5 | Attack Complexity: LOW |
Impact Score: 3.4 | Privileges Required: NONE |
Severity: MEDIUM | User Interaction: NONE |
Vector: AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | Scope: UNCHANGED |
| Confidentiality: LOW |
| Integrity: LOW |
| Availability: LOW |
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References: Resource Id | Reference |
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SCAP Repo OVAL Definition | oval:org.secpod.oval:def:97812 |