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Check: GEN004510

SUSE Linux Enterprise Server v11 for System z STIG: GEN004510 (in versions v1 r12 through v1 r9)

Title

The SMTP service log file must not have an extended ACL. (Cat II impact)

Discussion

If the SMTP service log file has an extended ACL, unauthorized users may be allowed to access or to modify the log file.

Check Content

# more /etc/rsyslog.conf Examine /etc/rsyslog.conf and determine the log file(s) receiving logs for "mail.crit", "mail.debug", mail.*, or "*.crit". Check the permissions on these log files. # ls -lL <log file> If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text

This fix is applicable to both Postfix and sendmail servers. Remove the extended ACL from the file. # setfacl --remove-all <log file>

Additional Identifiers

Rule ID: SV-45862r1_rule

Vulnerability ID: V-22442

Group Title: GEN004510

Expert Comments

Expert comments are only available to logged-in users.

CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege