SB2021110918 - Privilege escalation in Microsoft Windows Core Shell SI Host Extension Framework for Composable Shell
Published: November 9, 2021
Security Bulletin ID
SB2021110918
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-42286)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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 application does not properly impose security restrictions in Windows Core Shell SI Host Extension Framework for Composable Shell, which leads to security restrictions bypass and privilege escalation.
Remediation
Install update from vendor's website.