SB2018050837 - Security restrictions bypass in Microsoft Windows

Main Vulnerability Database SB2018050837

SB2018050837 - Security restrictions bypass in Microsoft Windows

Published: May 8, 2018

Security Bulletin ID SB2018050837

CSH Severity

Low

Patch available

YES

Number of vulnerabilities 5

Exploitation vector Remote access

Highest impact Data manipulation

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 5 vulnerabilities.

1) Security restrictions bypass (CVE-ID: CVE-2018-0854)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to bypass security restriction on the target system.

The weakness exists due to improper validation of User Mode Code Integrity policies. A local attacker can run a malicious program, bypass Device Guard and circumvent a User Mode Code Integrity (UMCI) policy on the machine.

2) Security restrictions bypass (CVE-ID: CVE-2018-0958)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to bypass security restriction on the target system.

The weakness exists due to improper validation of User Mode Code Integrity policies. A local attacker can run a malicious program, bypass Device Guard and circumvent a User Mode Code Integrity (UMCI) policy on the machine.

3) Security restrictions bypass (CVE-ID: CVE-2018-8129)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to bypass security restriction on the target system.

The weakness exists due to improper validation of User Mode Code Integrity policies. A local attacker can run a malicious program, bypass Device Guard and circumvent a User Mode Code Integrity (UMCI) policy on the machine.

4) Security restrictions bypass (CVE-ID: CVE-2018-8132)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to bypass security restriction on the target system.

The weakness exists due to improper validation of User Mode Code Integrity policies. A local attacker can run a malicious program, bypass Device Guard and circumvent a User Mode Code Integrity (UMCI) policy on the machine.

5) Security restrictions bypass (CVE-ID: CVE-2018-8142)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to bypass security restriction on the target system.

The weakness exists due to Windows incorrectly validates kernel driver signatures. A remote attacker can bypass security features and load improperly signed drivers into the kernel.

Remediation

Install update from vendor's website.

References