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All shell files must not have extended ACLs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22366 | GEN002230 | SV-26491r1_rule | ECLP-1 | Medium |
| Description |
|---|
| Shells with world/group write permissions give the ability to maliciously modify the shell to obtain unauthorized access. |
| STIG | Date |
|---|---|
| Solaris 9 X86 Security Technical Implementation Guide | 2013-07-02 |
Details
| Check Text ( C-27549r1_chk ) |
|---|
| If /etc/shells exists, check the permissions of each shell referenced. # cat /etc/shells | xargs -n1 ls -lL Otherwise, check any shells found on the system. # find / -name "*sh" | xargs -n1 ls -lL If the permissions include a "+", the file has an extended ACL, this is a finding. |
| Fix Text (F-23720r1_fix) |
|---|
| Remove the extended ACL from the file. # getfacl [shell] Remove each ACE returned. # setfacl -d [ACE] [shell] |