Check: UBTU-16-030720
Canonical Ubuntu 16.04 LTS STIG:
UBTU-16-030720
(in versions v2 r3 through v1 r3)
Title
The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for operational support. (Cat I impact)
Discussion
If TFTP is required for operational support (such as the transmission of router configurations) its use must be documented with the Information System Security Officer (ISSO), restricted to only authorized personnel, and have access control rules established.
Check Content
Verify a Trivial File Transfer Protocol (TFTP) server has not been installed. Check to see if a TFTP server has been installed with the following command: # dpkg -l | grep -i tftpd ii atftpd 0.7.git20120829-2.1 rc tftpd 0.17-18ubuntu2 rc tftpd-hpa 5.2+20150808-1ubuntu1.16.04.1 If a TFTP package is installed and the requirement for TFTP is not documented with the Information System Security Officer (ISSO), this is a finding.
Fix Text
Remove the Trivial File Transfer Protocol (TFTP) package from the system with the following command: # sudo apt-get remove *tftpd*
Additional Identifiers
Rule ID: SV-215158r610931_rule
Vulnerability ID: V-215158
Group Title: SRG-OS-000480-GPOS-00227
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000318 |
The organization audits and reviews activities associated with configuration-controlled changes to the system. |
| CCI-000368 |
The organization documents any deviations from the established configuration settings for organization-defined information system components based on organization-defined operational requirements. |
| CCI-001812 |
The information system prohibits user installation of software without explicit privileged status. |
| CCI-001813 |
The information system enforces access restrictions. |
| CCI-001814 |
The Information system supports auditing of the enforcement actions. |