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V-260579

CAT I (High)

Ubuntu 22.04 LTS must map the authenticated identity to the user or group account for PKI-based authentication.

Rule ID

SV-260579r958452_rule

STIG

Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000187

Discussion

Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the individual user or group will not be available for forensic analysis.

Check Content

Verify that "use_mappers" is set to "pwent" in "/etc/pam_pkcs11/pam_pkcs11.conf" file by using the following command:  
  
     $ grep -i use_mappers /etc/pam_pkcs11/pam_pkcs11.conf 
     use_mappers = pwent 
  
If "use_mappers" does not contain "pwent", is commented out, or is missing, this is a finding.

Fix Text

Set "use_mappers=pwent" in "/etc/pam_pkcs11/pam_pkcs11.conf" or, if there is already a comma-separated list of mappers, add it to the list, separated by comma, and before the null mapper.  
  
If the system is missing an "/etc/pam_pkcs11/" directory and an "/etc/pam_pkcs11/pam_pkcs11.conf", find an example to copy into place and modify accordingly at "/usr/share/doc/libpam-pkcs11/examples/pam_pkcs11.conf.example.gz".