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The ftpusers file must not have an extended ACL.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22445 | GEN004950 | SV-45884r1_rule | ECLP-1 | Medium |
| Description |
|---|
| Excessive permissions on the ftpusers file could permit unauthorized modification. Unauthorized modification could result in Denial of Service to authorized FTP users or permit unauthorized users to access the FTP service. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2015-10-20 |
Details
| Check Text ( C-43201r1_chk ) |
|---|
| Check the permissions of the /etc/ftpusers file. # ls -lL /etc/ftpusers /etc/vsftpd.ftpusers /etc/vsftpd/ftpusers If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding. |
| Fix Text (F-39262r1_fix) |
|---|
| Remove the extended ACL from the file. # setfacl --remove-all /etc/ftpusers /etc/vsftpd.ftpusers /etc/vsftpd/ftpusers |