SB2018050814 - Security Feature Bypass in Microsoft .NET Framework
Published: May 8, 2018
Security Bulletin ID
SB2018050814
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) Security Feature Bypass (CVE-ID: CVE-2018-1039)
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 bypass certain security restrictions.
The vulnerability exists due to an error in .Net Framework when processing COM objects. A local user can circumvent a User Mode Code Integrity (UMCI) policy on the machine and bypass Device Guard with a specially crafted application.
Remediation
Install update from vendor's website.