Ubuntu 22.04 LTS must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts have been made.
An XCCDF Rule
Description
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account. Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128
- ID
- SV-260549r958388_rule
- Version
- UBTU-22-411045
- Severity
- Low
- References
- Updated
Remediation Templates
A Manual Procedure
Configure Ubuntu 22.04 LTS to utilize the "pam_faillock" module.
Add or modify the following lines in the "/etc/pam.d/common-auth" file, below the "auth" definition for "pam_unix.so":
auth [default=die] pam_faillock.so authfail
auth sufficient pam_faillock.so authsucc