SB2021041312 - Multiple vulnerabilities in Microsoft Windows Installer

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-28440)

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 the Windows Installer, which leads to security restrictions bypass and privilege escalation.

2) Spoofing attack (CVE-ID: CVE-2021-26413)

The vulnerability allows a local attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Windows Installer. A local attacker can spoof page content.

3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-26415)

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 the Windows Installer, which leads to security restrictions bypass and privilege escalation.

4) Information disclosure (CVE-ID: CVE-2021-28437)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the Windows Installer. A local user can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28440
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26413
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26415
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28437