CVE-2021-22038 : Security Advisory and Response
Learn about CVE-2021-22038 impacting VMware InstallBuilder on Windows. Discover the security flaw allowing privilege escalation & steps to prevent exploitation.
A security vulnerability, CVE-2021-22038, has been identified in VMware InstallBuilder prior to version 21.6.0 that impacts Windows installers. The vulnerability allows a potential attacker to gain Administrator privileges by replacing a binary in a fixed temporary location.
Understanding CVE-2021-22038
This section provides insights into the nature of the CVE-2021-22038 vulnerability.
What is CVE-2021-22038?
The CVE-2021-22038 vulnerability in VMware InstallBuilder involves an uncontrolled search path element on Windows. The uninstaller binary copies itself to a fixed temporary location, potentially allowing an attacker to replace the binary and gain Administrator privileges.
The Impact of CVE-2021-22038
The vulnerability exposes affected Windows installers to the risk of privilege escalation by unauthorized entities.
Technical Details of CVE-2021-22038
Explore the technical aspects and specifics of the CVE-2021-22038 vulnerability.
Vulnerability Description
The vulnerability arises from the lack of randomization in the temporary location where the uninstaller binary is copied, enabling a potential attacker to execute arbitrary code and obtain Administrator privileges.
Affected Systems and Versions
All VMware InstallBuilder versions prior to 21.6.0 are susceptible to this security flaw, specifically on Windows platforms.
Exploitation Mechanism
An attacker could plant a malicious binary to replace the copied uninstaller binary in the fixed temporary location, resulting in the execution of unauthorized commands with elevated privileges.
Mitigation and Prevention
Learn about the recommended mitigation strategies and preventive measures against CVE-2021-22038.
Immediate Steps to Take
It is crucial to update VMware InstallBuilder to version 21.6.0 or newer to mitigate the vulnerability. Users should also monitor system activity for any suspicious behavior.
Long-Term Security Practices
Enhance system security by implementing strict access controls, restricting user privileges, and regularly updating software to address known vulnerabilities.
Patching and Updates
Stay vigilant for security updates from VMware and promptly apply patches to ensure the protection of systems against potential exploits.