Check: UBTU-20-010423
Canonical Ubuntu 20.04 LTS STIG:
UBTU-20-010423
(in versions v1 r12 through v1 r1)
Title
The Ubuntu operating system must have directories that contain system commands set to a mode of 0755 or less permissive. (Cat II impact)
Discussion
Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. Operating systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user has in order to make access decisions regarding the deletion of audit tools. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.
Check Content
Verify the system commands directories have mode 0755 or less permissive: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Check that the system command directories have mode 0755 or less permissive with the following command: $ find /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type d -exec stat -c "%n %a" '{}' \; If any directories are found to be group-writable or world-writable, this is a finding.
Fix Text
Configure the system commands directories to be protected from unauthorized access. Run the following command: $ sudo find /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type d -exec chmod -R 755 '{}' \;
Additional Identifiers
Rule ID: SV-238344r654207_rule
Vulnerability ID: V-238344
Group Title: SRG-OS-000258-GPOS-00099
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001495 |
The information system protects audit tools from unauthorized deletion. |
Controls
Number | Title |
---|---|
AU-9 |
Protection Of Audit Information |