Security Bulletin: IBM Spectrum Protect Plus has Insecure File Permissions due to not setting the Sticky Bit (CVE-2021-20490)

Summary

IBM Spectrum Protect Plus has several directories that are failing security scans due to the sticky bit not being set on world-writable files.

Vulnerability Details

CVEID:CVE-2021-20490
**DESCRIPTION:**IBM Spectrum Protect Plus could allow a local user to cause a denial of service due to insecure file permission settings.
CVSS Base score: 4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197791 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Remediation/Fixes

This issue is resolved by applying 10.1.8 patch 1 (see download link below). Once the 10.1.8 patch 1 is installed, the sticky bit will be set during the next scheduled run of the Maintenance job. If the sticky bit needs to be set immediately after applying 10.1.8 patch 1, the Maintenance job can be run manually by performing the following steps:

1. In the main menu screen of Spectrum Protect Plus, click on the “Jobs and Operations” tab.
2. In the “Jobs and Operations” tab, click on the “Schedule” sub-tab.
3. From the list of jobs, select “Maintenance job”.
4. Click the “Start” button to initiate the job.
5. Sticky bit will be set once the maintenance job has completed.

IBM Spectrum Protect Plus Release|First Fixing VRM Level|Platform|**APAR
**|Link to Fix
—|—|—|—|—
10.1| 10.1.8.1
| Linux| IT34717| <https://www.ibm.com/support/pages/node/6415111&gt;

Workarounds and Mitigations

None