SV-260480r991589: Ubuntu 22.04 LTS must not have the "systemd-timesyncd" package installed. | Canonical Ubuntu 22.04 LTS STIG SCAP Benchmark

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Assessment Title

Rule Text

Ubuntu 22.04 LTS must not have the "systemd-timesyncd" package installed.

Description

Discussion Text

Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate. Organizations must consider endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints).

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target Canonical Ubuntu 22.04 LTS DISA DPMS Target Canonical Ubuntu 22.04 LTS 5594

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

#!/bin/bash
# Reconstructed from oval:mil.disa.stig.ubuntu2204os:def:260480
# Ubuntu 22.04 LTS must not have the "systemd-timesyncd" package installed.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# package systemd-timesyncd is  not installed
# dpkginfo_object (dpkginfo_test)
test_1() {
  ! ( grep -A1 '^Package: systemd-timesyncd$' /var/lib/dpkg/status &>/dev/null )
}

if test_1; then
  echo "PASS"
else
  echo "FAIL"
fi

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# OVAL Definition: oval:mil.disa.stig.ubuntu2204os:def:260480
if [ ! -f "/var/lib/dpkg/status" ]; then echo "PASS"; exit 0; fi
if [ "$(grep -c "^Package:\s+systemd-timesyncd" /var/lib/dpkg/status)" -eq 0 ]; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

The "systemd-timesyncd" package will be uninstalled as part of the "chrony" package install. The remaining configuration files for "systemd-timesyncd" must be purged from the operating system: 
 
     $ sudo dpkg -P --force-all systemd-timesyncd