Link following in Microsoft Windows and Windows Server - CVE-2022-21838

Vulnerability identifier: #VU59472

CSH Severity: Low

CVSS v4: 4.8 [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]

CVE-ID: CVE-2022-21838

CWE-ID: CWE-59

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

Microsoft Windows
Windows Server
Solutions Enabler Virtual Appliance
Solutions Enabler
Unisphere 360
Unisphere for PowerMax Virtual Appliance
Unisphere for PowerMax
VASA Provider Standalone

Install updates from vendor's website.

Solutions Enabler Virtual Appliance - addressed in versions 9.1.0.19, 9.2.3.1
Solutions Enabler - addressed in versions 9.1.0.19, 9.2.3.1
Unisphere 360 - addressed in versions 9.1.0.30, 9.2.3.4
Unisphere for PowerMax Virtual Appliance - addressed in versions 9.1.0.32, 9.2.3.11
Unisphere for PowerMax - addressed in versions 9.1.0.32, 9.2.3.11
VASA Provider Standalone - addressed in versions 9.1.0.724, 9.2.3.10

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21838
• https://www.zerodayinitiative.com/advisories/ZDI-22-049/

• Privilege escalation in Microsoft Windows Cleanup Manager
• Multiple vulnerabilities in Dell Unisphere for PowerMax, Dell Solutions Enabler, Dell Unisphere 360 and Dell VASA Provider