SV-37962r1: If the system is using LDAP for authentication or account information, the TLS certificate authority file and/or directory (as appropriate) must have mode 0644 (0755 for directories) or less permissive. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

If the system is using LDAP for authentication or account information, the TLS certificate authority file and/or directory (as appropriate) must have mode 0644 (0755 for directories) or less permissive.

Description

Discussion Text

LDAP can be used to provide user authentication and account information, which are vital to system security. The LDAP client configuration must be protected from unauthorized modification.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000225

Additional Details

Responsibility

System Administrator

IA Controls

ECLP-1

References

DPMS Target Red Hat 5 DISA DPMS Target Red Hat 5 2154

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.fso.rhel11:def:430
# If the system is using LDAP for authentication or account information, the TLS certificate authority file and/or directory (as appropriate) must have mode 0644 (0755 for directories) or less permissive.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
#
# MANUAL REVIEW REQUIRED -- the module(s) below could not be reconstructed
# into working code from curated SCC reference data, and are excluded from
# the automated result:
#   - file_object (file_test) -- CA cert file perms 0644: no extractor for field "gexec"
#   - file_object (file_test) -- CA cert file dir perms 0755: no extractor for field "sgid"
#   - file_object (file_test) -- CA cert dir perms 0755: no extractor for field "sgid"
#   - file_object (file_test) -- CA cert dir files perms 0644: no extractor for field "gexec"

# The /etc/ldap.conf file does not exist
# file_object (file_test)
test_1() {
  ! ( test -e '/etc/ldap.conf' &>/dev/null )
}
# The /etc/ldap.conf file exists but does not have at least one correctly formated tls_cacertfile entry
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  ! ( grep -Pq '^[tT][lL][sS]_[cC][aA][cC][eE][rR][tT][fF][iI][lL][eE]\s+\S+/([^\s/]+)$' '/etc/ldap.conf' &>/dev/null )
}
# The /etc/ldap.conf file exists but does not have at least one correctly formated tls_cacertdir entry
# textfilecontent54_object (textfilecontent54_test)
test_3() {
  ! ( grep -Pq '^[tT][lL][sS]_[cC][aA][cC][eE][rR][tT][dD][iI][rR]\s+(\S+)$' '/etc/ldap.conf' &>/dev/null )
}

if ( test_1 || test_2 || test_3 ); then
  echo "PASS (automated portion only -- MANUAL REVIEW still required, see notes above)"
else
  echo "FAIL (or see MANUAL REVIEW note above)"
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:mil.disa.fso.rhel11:def:430

if [ ! -f "/etc/ldap.conf" ]; then
    echo "PASS"
    exit 0
fi

if ! grep -E "^[tT][lL][sS]_[cC][aA][cC][eE][rR][tT][fF][iI][lL][eE]\\s+[^/]+$" /etc/ldap.conf | grep -q "$"; then
    echo "FAIL"
    exit 1
fi

if ! grep -E "^[tT][lL][sS]_[cC][aA][cC][eE][rR][tT][dD][iI][rR]\\s+[^/]+$" /etc/ldap.conf | grep -q "$"; then
    echo "FAIL"
    exit 1
fi

certpath=$(grep -E "^[tT][lL][sS]_[cC][aA][cC][eE][rR][tT][fF][iI][lL][eE]\\s+[^/]+$" /etc/ldap.conf | cut -d''-f2)
if [ -n "$certpath" ]; then
    if [ ! -f "$certpath" ]; then
        if [ ! -w "$certpath" ]; then
            echo "PASS"
            exit 0
        else
            echo "FAIL"
            exit 1
        fi
    else
        if [ ! -r "$certpath" ]; then
            echo "PASS"
            exit 0
        else
            echo "FAIL"
            exit 1
        fi
    fi
fi

echo "PASS"
exit 0

Remediation

Change the mode of the file or directory.

File Procedure:
# chmod 0644 <certpath> 

Directory Procedure:
# chmod 0755 <certpath>