Title

The Ubuntu operating system must map the authenticated identity to the user or group account for PKI-based authentication. (Cat I impact)

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 the Ubuntu operating system has the "libpam-pkcs11" package installed, by running the following command: # dpkg -l | grep libpam-pkcs11 If "libpam-pkcs11" is not installed, this is a finding. Check if use_mappers is set to pwent in /etc/pam_pkcs11/pam_pkcs11.conf file # grep use_mappers /etc/pam_pkcs11/pam_pkcs11.conf use_mappers = pwent If "use_mappers" is not found, or is not set to "pwent", this is a finding.

Fix Text

Install libpam-pkcs11 package on the system. Set use_mappers=pwent in /etc/pam_pkcs11/pam_pkcs11.conf 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".

Additional Identifiers

Rule ID: SV-219316r880891_rule

Vulnerability ID: V-219316

Group Title: SRG-OS-000068-GPOS-00036

Expert Comments

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