RHEL-09-654010 - RHEL 9 must audit uses of the 'execve' system call.

Information

Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse and identify the risk from insider threats and the advanced persistent threat.

Satisfies: SRG-OS-000326-GPOS-00126, SRG-OS-000327-GPOS-00127

Solution

Configure RHEL 9 to audit the execution of the 'execve' system call.

Add or update the following file system rules to '/etc/audit/rules.d/audit.rules':

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k execpriv
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k execpriv
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k execpriv
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k execpriv

The audit daemon must be restarted for the changes to take effect.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_RHEL_9_V1R3_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6(8), 800-53|AC-6(9), CAT|II, CCI|CCI-002233, CCI|CCI-002234, Rule-ID|SV-258176r926515_rule, STIG-ID|RHEL-09-654010, Vuln-ID|V-258176

Plugin: Unix

Control ID: d8df8c16f035f785945c2d1ad88e151717553fba4a118b388ff7a69c11a7be73