Oracle Solaris
TMA-SOLARIS-7.3
Set Default umask for users
Description
The default umask(1) determines the permissions of files created by users. The user creating the file has the discretion of making their files and directories readable by others via the chmod(1) command. Setting a very secure default value for umask ensures that users make a conscious choice about their file permissions. A default umask setting of 077 causes files and directories created by users to not be readable by any other user on the system. Audit: UMASK must be 027 (or the stricter 077).
How it is checked
Audit method: File pattern
- File
/etc/default/login- Pattern
(?m)^UMASK=0?(27|77)\s*$
How it is fixed
Fix method: Guidance or infrastructure patch
Perform the following to implement the recommended state: # cd /etc/default # awk '/#UMASK=/ { $1 = "UMASK=027" } { print }' login > login.CIS # mv login.CIS login
Properties
- Operating systems
- Any
- Tags
- solarisaccounts
- Reference
- CIS Oracle Solaris 11.4 Benchmark v1.1.0 - 7.3 Set Default umask for users
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
tmaegis scan --target solaris