The pcnfsd daemon must be disabled on AIX.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-215379	SRG-OS-000095-GPOS-00049	AIX7-00-003074	SV-215379r958478_rule	2024-08-16	3

Description
The pcnfsd service is an authentication and printing program, which uses NFS to provide file transfer services. This service is vulnerable and exploitable and permits the machine to be compromised both locally and remotely. If PC NFS clients are required within the environment, Samba is recommended as an alternative software solution. The pcnfsd daemon predates Microsoft's release of SMB specifications. This service should therefore be disabled to prevent attacks.

Description

The pcnfsd service is an authentication and printing program, which uses NFS to provide file transfer services. This service is vulnerable and exploitable and permits the machine to be compromised both locally and remotely. If PC NFS clients are required within the environment, Samba is recommended as an alternative software solution. The pcnfsd daemon predates Microsoft's release of SMB specifications. This service should therefore be disabled to prevent attacks.

ℹ️ Check
From the command prompt, execute the following command: # grep "^pcnfsd[[:blank:]]" /etc/inetd.conf If there is any output from the command, this is a finding.

✔️ Fix
In "/etc/inetd.conf", comment out the "pcnfsd" entry by running command: # chsubserver -r inetd -C /etc/inetd.conf -d -v 'pcnfsd' -p 'udp' Restart inetd: # refresh -s inetd