STIGQter: STIG Summary: Riverbed NetIM OS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 11 Sep 2025:

Ubuntu OS must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.

DISA Rule

SV-275583r1147799_rule

Vulnerability Number

V-275583

Group Title

SRG-OS-000205-GPOS-00083

Rule Version

RIIM-OS-232026

Severity

CAT II

CCI(s)

• CCI-001312 - Generates error messages that provide information necessary for corrective actions without revealing information that could be exploited.

Weight

10

Fix Recommendation

Configure Ubuntu OS to set permissions of all log files under the "/var/log" directory to "640" or more restricted by using the following command:

Note: The btmp, wtmp, and lastlog files are excluded. Refer to the Vul Discussion for details.

$ sudo find /var/log -perm /137 ! -name '*[bw]tmp' ! -name '*lastlog' -type f -exec chmod 640 '{}' \;

Check Contents

Verify Ubuntu OS has all system log files under the "/var/log" directory with a permission set to "640" or less permissive by using the following command:

Note: The btmp, wtmp, and lastlog files are excluded. Refer to the Vul Discussion for details.

$ sudo find /var/log -perm /137 ! -name '*[bw]tmp' ! -name '*lastlog' -type f -exec stat -c "%n %a" {} \;

If the command displays any output, this is a finding.

Vulnerability Number

V-275583

Documentable

False

Rule Version

RIIM-OS-232026

Severity Override Guidance

Verify Ubuntu OS has all system log files under the "/var/log" directory with a permission set to "640" or less permissive by using the following command:

Note: The btmp, wtmp, and lastlog files are excluded. Refer to the Vul Discussion for details.

$ sudo find /var/log -perm /137 ! -name '*[bw]tmp' ! -name '*lastlog' -type f -exec stat -c "%n %a" {} \;

If the command displays any output, this is a finding.

Check Content Reference

M

Target Key

5706