Configure systemd-journal-upload URL

An XCCDF Rule

Description

SUSE Linux Enterprise Micro 5 must offload rsyslog messages for networked systems in real time and offload standalone systems at least weekly

Rationale

Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common process in information systems with limited audit storage capacity

ID: xccdf_org.ssgproject.content_rule_systemd_journal_upload_url
Severity: Medium
References: SRG-OS-000479-GPOS-00224

SLEM-05-652010

SV-261409r996643_rule

CCE-94081-7
Updated: 5 days ago

- name: Gather the package facts
  package_facts:
    manager: auto
  tags:
  - CCE-94081-7
  - DISA-STIG-SLEM-05-652010  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy
  - systemd_journal_upload_url
- name: XCCDF Value var_journal_upload_url # promote to variable
  set_fact:
    var_journal_upload_url: !!str <xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_journal_upload_url" use="legacy"/>
  tags:
    - always

- name: Set URL in /etc/systemd/journal-upload.conf
  lineinfile:
    dest: /etc/systemd/journal-upload.conf
    regexp: ^#?URL=
    line: URL={{ var_journal_upload_url }}
    create: true
  when: '"kernel-default" in ansible_facts.packages'
  tags:
  - CCE-94081-7
  - DISA-STIG-SLEM-05-652010
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy
  - systemd_journal_upload_url

# Remediation is applicable only in certain platforms
if rpm --quiet -q kernel-default; then

var_journal_upload_url='<xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_journal_upload_url" use="legacy"/>'

# Strip any search characters in the key arg so that the key can be replaced without# adding any search characters to the config file.
stripped_key=$(sed 's/[\^=\$,;+]*//g' <<< "^URL")

# shellcheck disable=SC2059
printf -v formatted_output "%s=%s" "$stripped_key" "$var_journal_upload_url"

# If the key exists, change it. Otherwise, add it to the config_file.
# We search for the key string followed by a word boundary (matched by \>),
# so if we search for 'setting', 'setting2' won't match.
if LC_ALL=C grep -q -m 1 -i -e "^URL\\>" "/etc/systemd/journal-upload.conf"; then
    escaped_formatted_output=$(sed -e 's|/|\\/|g' <<< "$formatted_output")
    LC_ALL=C sed -i --follow-symlinks "s/^URL\\>.*/$escaped_formatted_output/gi" "/etc/systemd/journal-upload.conf"
else
    if [[ -s "/etc/systemd/journal-upload.conf" ]] && [[ -n "$(tail -c 1 -- "/etc/systemd/journal-upload.conf" || true)" ]]; then
        LC_ALL=C sed -i --follow-symlinks '$a'\\ "/etc/systemd/journal-upload.conf"
    fi
    cce="CCE-94081-7"
    printf '# Per %s: Set %s in %s\n' "${cce}" "${formatted_output}" "/etc/systemd/journal-upload.conf" >> "/etc/systemd/journal-upload.conf"
    printf '%s\n' "$formatted_output" >> "/etc/systemd/journal-upload.conf"
fi

else
    >&2 echo 'Remediation is not applicable, nothing was done'
fi

Configure systemd-journal-upload URL

Description

Rationale

Remediation - Ansible

Remediation - Shell Script