CVE-2021-41544 : Exploit Details and Defense Strategies

A vulnerability has been identified in Siemens Software Center that could allow a local attacker to execute code with elevated privileges by placing a malicious DLL in certain directories.

Understanding CVE-2021-41544

This CVE pertains to a DLL Hijacking vulnerability in Siemens Software Center versions prior to V3.0.

What is CVE-2021-41544?

The CVE-2021-41544 vulnerability involves a scenario where a local attacker could exploit a DLL Hijacking vulnerability to run code with elevated privileges by inserting a malicious DLL into specific directories on the DLL search path.

The Impact of CVE-2021-41544

This vulnerability poses a high severity risk with a CVSS base score of 7.8, allowing attackers to execute arbitrary code with elevated privileges, potentially leading to system compromise.

Technical Details of CVE-2021-41544

This section delves into specific technical aspects of the CVE.

Vulnerability Description

The vulnerability stems from uncontrolled search path elements, a common issue that enables attackers to manipulate the way applications locate dynamic link libraries (DLLs).

Affected Systems and Versions

Vendor: Siemens
Product: Siemens Software Center
Affected Version: All versions prior to V3.0

Exploitation Mechanism

Attackers can exploit this vulnerability by placing a malicious DLL in directories that are part of the DLL search path, tricking the application into loading the malicious code.

Mitigation and Prevention

Mitigation strategies to address the CVE-2021-41544 vulnerability.

Immediate Steps to Take

Monitor directories for unauthorized DLLs
Implement least privilege access controls
Apply the principle of least privilege for application execution

Long-Term Security Practices

Regularly update the application and associated libraries
Conduct security assessments and code reviews periodically

Patching and Updates

Apply vendor-recommended patches promptly
Keep software up to date to mitigate known vulnerabilities