CVE-2021-25699 : Exploit Details and Defense Strategies

A vulnerability in the OpenSSL component of the Teradici PCoIP Software Client prior to version 21.07.0 allows attackers to elevate privileges by placing a specially crafted DLL in a build configuration directory.

Understanding CVE-2021-25699

This CVE refers to a security flaw in the OpenSSL component of Teradici's PCoIP Software Client version 21.07.0.

What is CVE-2021-25699?

The vulnerability arises due to the OpenSSL component being compiled without the 'no-autoload-config' option, enabling attackers to escalate privileges.

The Impact of CVE-2021-25699

By exploiting this vulnerability, an attacker can gain the privileges of the running process through a malicious DLL.

Technical Details of CVE-2021-25699

This section covers specific technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the OpenSSL component of the PCoIP Software Client, allowing privilege escalation by placing a manipulated DLL in a build configuration directory.

Affected Systems and Versions

The issue affects Teradici PCoIP Software Client versions prior to 21.07.0.

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting a specially crafted DLL into a specific build configuration directory.

Mitigation and Prevention

Protecting systems from CVE-2021-25699 requires immediate action and long-term security measures.

Immediate Steps to Take

Organizations should update Teradici PCoIP Software Client to version 21.07.0 or later to mitigate the vulnerability.

Long-Term Security Practices

Implement secure coding practices, conduct regular security assessments, and monitor for unusual activities in build configuration directories.

Patching and Updates

Stay informed about security advisories from Teradici and promptly apply patches and updates to address known vulnerabilities.