Cis Ubuntu2004 V300 6 1 1

6.1.1 Ensure AIDE is installed (Automated)

Profile

• Level 1 - Server
• Level 1 - Workstation

Description

AIDE takes a snapshot of filesystem state including modification times, permissions, and file hashes which can then be used to compare against the current state of the filesystem to detect modifications to the system.

Rationale

By monitoring the filesystem state compromised files can be detected to prevent or limit the exposure of accidental or malicious misconfigurations or modified binaries.

Audit Procedure

Command Line

Run the following command to verify aide is installed:

# dpkg-query -s aide &>/dev/null && echo "aide is installed"

Run the following command to verify aide-common is installed:

# dpkg-query -s aide-common &>/dev/null && echo "aide-common is installed"

Expected Result

aide is installed
aide-common is installed

Remediation

Command Line

Install AIDE using the appropriate package manager or manual installation:

# apt install aide aide-common

Configure AIDE as appropriate for your environment. Consult the AIDE documentation for options. Run the following commands to initialize AIDE:

# aideinit
# mv /var/lib/aide/aide.db.new /var/lib/aide/aide.db

Default Value

Not installed by default.

References

1. NIST SP 800-53 Rev. 5: AU-2
2. STIG ID: UBTU-20-010450 | Rule ID: SV-238371r958944 | CAT II
3. STIG ID: UBTU-22-651010 | Rule ID: SV-260582r958944 | CAT II

CIS Controls

MITRE ATT&CK Mappings