Title

User start-up files must not execute world-writable programs. (Cat II impact)

Discussion

If start-up files execute world-writable programs, especially in unprotected directories, they could be maliciously modified to become Trojans destroying user files or otherwise compromising the system at the user, or higher, level. If the system is compromised at the user level, it is much easier to eventually compromise the system at the root and network level.

Check Content

Check local initialization files for any executed world-writable programs or scripts. Procedure: # find / -perm -002 -type f | egrep -v '^(/proc|/system/contract)' > wwlist # fgrep -f wwlist /<usershomedirectory>/.* If any local initialization file executes a world-writable program or script, this is a finding.

Fix Text

Remove the world-writable permission of files referenced by local initialization scripts, or remove the references to these files in the local initialization scripts.

Additional Identifiers

Rule ID: SV-227685r603266_rule

Vulnerability ID: V-227685

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.