Title

SLEM 5 must enforce a delay of at least five seconds between logon prompts following a failed logon attempt via pluggable authentication modules (PAM). (Cat II impact)

Discussion

Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account.

Check Content

Verify SLEM 5 enforces a delay of at least five seconds between logon prompts following a failed logon attempt with the following command: > grep pam_faildelay /etc/pam.d/common-auth auth required pam_faildelay.so delay=5000000 If the value of "delay" is not set to "5000000" or greater, "delay" is missing, the line is commented out, or the "pam_faildelay" line is missing completely, this is a finding.

Fix Text

Configure SLEM 5 to enforce a delay of at least five seconds between logon prompts following a failed logon attempt. Add or modify the following line in the "/etc/pam.d/common-auth" file: auth required pam_faildelay.so delay=5000000

Additional Identifiers

Rule ID: SV-261365r996541_rule

Vulnerability ID: V-261365

Group Title: SRG-OS-000480-GPOS-00226

Expert Comments

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