CVE-2021-45036 Explained : Impact and Mitigation

CVE-2021-45036 pertains to an improper authentication vulnerability in Velneo vClient version 28.1.3, allowing an attacker to spoof a victim's identity against the server.

Understanding CVE-2021-45036

What is CVE-2021-45036?

Velneo vClient, in version 28.1.3, exposes a security flaw where an attacker, with knowledge of the victim's username and hashed password, can impersonate the victim's identity against the server.

The Impact of CVE-2021-45036

This vulnerability poses a high-risk scenario where confidentiality and integrity are compromised, enabling attackers to manipulate user identities without appropriate authentication.

Technical Details of CVE-2021-45036

Vulnerability Description

The vulnerability allows attackers to masquerade as legitimate users by leveraging known usernames and hashed passwords.

Affected Systems and Versions

Product: Velneo vClient
Vendor: Velneo
Affected Version: 28.1.3

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Confidentiality and Integrity are significantly affected

Mitigation and Prevention

Velneo has addressed this security issue in version 32, released on 11/08/2022.

Immediate Steps to Take

Users should update Velneo vClient to version 32 to mitigate the vulnerability.

Long-Term Security Practices

Implement multi-factor authentication to enhance user verification.
Regularly monitor and audit user authentication processes.
Educate users on secure password practices.

Patching and Updates

Apply updates promptly to ensure software security and protect against potential exploits.