SB2022011148 - Privilege escalation in Microsoft Windows Cleanup Manager
Published: January 11, 2022 Updated: January 17, 2022
Security Bulletin ID
SB2022011148
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Link following (CVE-ID: CVE-2022-21838)
CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a link following issue within the SilentCleanup scheduled task. A local user can create a specially symbolic crafted link to critical folders on the system and force the task to delete the folder.
Remediation
Install update from vendor's website.