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The TFTP daemon must operate in "secure mode" which provides access only to a single directory on the host file system.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-847 | GEN005080 | SV-37560r1_rule | ECSC-1 | High |
| Description |
|---|
| Secure mode limits TFTP requests to a specific directory. If TFTP is not running in secure mode, it may be able to write to any file or directory and may seriously impair system integrity, confidentiality, and availability. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2014-04-02 |
Details
| Check Text ( C-36211r1_chk ) |
|---|
| # grep server_args /etc/xinetd.d/tftp If the "-s" parameter is not specified, this is a finding. |
| Fix Text (F-31470r1_fix) |
|---|
| Edit /etc/xinetd.d/tftp file and specify the "-s" parameter in server_args. |