Check: GEN002280
SUSE Linux Enterprise Server v11 for System z STIG:
GEN002280
(in versions v1 r12 through v1 r9)
Title
Device files and directories must only be writable by users with a system account or as configured by the vendor. (Cat II impact)
Discussion
System device files in writable directories could be modified, removed, or used by an unprivileged user to control system hardware.
Check Content
Find all world-writable device files existing anywhere on the system. Procedure: # find / -perm -2 -a \( -type b -o -type c \) > devicelist Check the permissions on the directories above subdirectories containing device files. If any of the device files or their parent directories are world-writable, excepting device files specifically intended to be world-writable such as /dev/null, this is a finding.
Fix Text
Remove the world-writable permission from the device file(s). Procedure: # chmod o-w <device file> Document all changes.
Additional Identifiers
Rule ID: SV-45177r1_rule
Vulnerability ID: V-924
Group Title: GEN002280
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |
Controls
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |