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.ubuntu1804:def:188
# The Ubuntu operating system must generate audit records for any usage of the setxattr, fsetxattr, lsetxattr, removexattr, fremovexattr, and lremovexattr system calls.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
# auditd package is installed
# dpkginfo_object (dpkginfo_test)
test_1() {
grep -A1 '^Package: auditd$' /var/lib/dpkg/status &>/dev/null
}
# check for running auditd
# process58_object (process58_test)
test_2() {
ps -eo args | grep -P '^\/sbin\/auditd\b' &>/dev/null
}
# Audit 32-bit invocations of setxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_3() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+setxattr[\s]+|([\s]+|[,])setxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(unset|-1|4294967295).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of setxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_4() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+setxattr[\s]+|([\s]+|[,])setxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(unset|-1|4294967295).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of setxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_5() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+setxattr[\s]+|([\s]+|[,])setxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of setxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_6() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+setxattr[\s]+|([\s]+|[,])setxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of lremovexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_7() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+lremovexattr[\s]+|([\s]+|[,])lremovexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of lremovexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_8() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+lremovexattr[\s]+|([\s]+|[,])lremovexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of lremovexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_9() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+lremovexattr[\s]+|([\s]+|[,])lremovexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of lremovexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_10() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+lremovexattr[\s]+|([\s]+|[,])lremovexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of lsetxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_11() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+lsetxattr[\s]+|([\s]+|[,])lsetxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of lsetxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_12() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+lsetxattr[\s]+|([\s]+|[,])lsetxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of lsetxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_13() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+lsetxattr[\s]+|([\s]+|[,])lsetxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of lsetxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_14() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+lsetxattr[\s]+|([\s]+|[,])lsetxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of removexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_15() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+removexattr[\s]+|([\s]+|[,])removexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of removexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_16() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+removexattr[\s]+|([\s]+|[,])removexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of removexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_17() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+removexattr[\s]+|([\s]+|[,])removexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of removexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_18() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+removexattr[\s]+|([\s]+|[,])removexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of fremovexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_19() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+fremovexattr[\s]+|([\s]+|[,])fremovexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of fremovexattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_20() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+fremovexattr[\s]+|([\s]+|[,])fremovexattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of fremovexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_21() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+fremovexattr[\s]+|([\s]+|[,])fremovexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of fremovexattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_22() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+fremovexattr[\s]+|([\s]+|[,])fremovexattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of fsetxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_23() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+fsetxattr[\s]+|([\s]+|[,])fsetxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of fsetxattr syscall by interactive users
# textfilecontent54_object (textfilecontent54_test)
test_24() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+fsetxattr[\s]+|([\s]+|[,])fsetxattr([\s]+|[,])).*)-F\s+auid>=1000\s+-F\s+auid!=(4294967295|-1|unset).*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 32-bit invocations of fsetxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_25() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S[\s]+fsetxattr[\s]+|([\s]+|[,])fsetxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
# Audit 64-bit invocations of fsetxattr syscall by root
# textfilecontent54_object (textfilecontent54_test)
test_26() {
grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S[\s]+fsetxattr[\s]+|([\s]+|[,])fsetxattr([\s]+|[,])).*)-F\s+auid=0.*(-k[\s]+|-F[\s]+key=)[-\w]+[\s]*$' '/etc/audit/audit.rules' &>/dev/null
}
if ( test_1 && test_2 && test_3 && test_4 && test_5 && test_6 && test_7 && test_8 && test_9 && test_10 && test_11 && test_12 && test_13 && test_14 && test_15 && test_16 && test_17 && test_18 && test_19 && test_20 && test_21 && test_22 && test_23 && test_24 && test_25 && test_26 ); then
echo "PASS"
else
echo "FAIL"
fi