CVE-2021-20616 Explained : Impact and Mitigation

A vulnerability has been identified in SKYSEA Client View versions Ver.1.020.05b to Ver.16.001.01g, allowing an attacker to gain privileges through a Trojan horse DLL in an unspecified directory.

Understanding CVE-2021-20616

This section delves into the details of the CVE-2021-20616 vulnerability.

What is CVE-2021-20616?

The CVE-2021-20616 vulnerability is an untrusted search path vulnerability found in the installer of SKYSEA Client View versions Ver.1.020.05b to Ver.16.001.01g. This flaw enables an attacker to escalate privileges by introducing a Trojan horse DLL into an unspecified directory.

The Impact of CVE-2021-20616

The impact of CVE-2021-20616 is significant as it allows malicious actors to exploit the vulnerability to gain elevated privileges on affected systems, posing a serious security risk.

Technical Details of CVE-2021-20616

In this section, we explore the technical aspects of CVE-2021-20616.

Vulnerability Description

The vulnerability arises from an untrusted search path issue in the SKYSEA Client View installer, which facilitates unauthorized privilege escalation through a malicious DLL placed in an unspecified directory.

Affected Systems and Versions

SKYSEA Client View versions from Ver.1.020.05b to Ver.16.001.01g are affected by CVE-2021-20616. Users operating these versions are vulnerable to potential exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by planting a Trojan horse DLL in a specific directory, leveraging the untrusted search path flaw in the SKYSEA Client View installer.

Mitigation and Prevention

This section provides guidance on mitigating and preventing the CVE-2021-20616 vulnerability.

Immediate Steps to Take

Users should update SKYSEA Client View to a patched version and refrain from executing files from untrusted sources to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and educating users on safe computing habits can enhance long-term security posture.

Patching and Updates

Regularly monitor for security updates from Sky Co., LTD., and apply patches promptly to address known vulnerabilities and reduce the attack surface.