cis-gcp-cos-6.1.3

DevOps & Security

Ensure permissions on /etc/group are configured

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6.1.3 Ensure permissions on /etc/group are configured (Automated)

Description

The /etc/group file contains a list of all the valid groups defined in the system. The command below allows read/write access for root and read access for everyone else.

Rationale

The /etc/group file needs to be protected from unauthorized changes by non-privileged users, but needs to be readable as this information is used with many non-privileged programs.

Audit Procedure

Run the following command and verify Uid and Gid are both 0/root and Access is 644:

# stat /etc/group
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)

Expected Result

Uid and Gid should both be 0/root and Access should be 644.

Remediation

Run the following command to set permissions on /etc/group:

# chown root:root /etc/group
# chmod 644 /etc/group

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	3.3 Configure Data Access Control Lists	x	x	x
v7	16.4 Encrypt or Hash all Authentication Credentials		x	x

Profile

Level 1 - Server