SB2021041312 - Multiple vulnerabilities in Microsoft Windows Installer

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Main Vulnerability Database SB2021041312

SB2021041312 - Multiple vulnerabilities in Microsoft Windows Installer

Published: April 13, 2021 Updated: July 25, 2021

Security Bulletin ID SB2021041312
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


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

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

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/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 the Windows Installer, which leads to security restrictions bypass and privilege escalation.


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

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

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


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)

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


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

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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


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