CVE-2021-27892 : Vulnerability Insights and Analysis

SSH Tectia Client and Server before version 6.4.19 on Windows are vulnerable to local privilege escalation, impacting ConnectSecure on Windows.

Understanding CVE-2021-27892

This CVE identifier pertains to a security vulnerability in SSH Tectia Client and Server versions pre-6.4.19 that allows for local privilege escalation on Windows platforms, affecting ConnectSecure as well.

What is CVE-2021-27892?

CVE-2021-27892 describes a flaw in SSH Tectia software for Windows systems, enabling an attacker to elevate their privileges locally. The vulnerability affects the ConnectSecure component.

The Impact of CVE-2021-27892

The impact of this CVE includes unauthorized users gaining elevated privileges on the affected Windows systems, potentially leading to further exploitation or control over the compromised machines.

Technical Details of CVE-2021-27892

Below are the technical specifics associated with CVE-2021-27892:

Vulnerability Description

SSH Tectia Client and Server versions prior to 6.4.19 on Windows allow for local privilege escalation. This means that an attacker with limited access can acquire higher privileges on the Windows platform.

Affected Systems and Versions

The vulnerability affects SSH Tectia Client and Server versions before 6.4.19 running on Windows. Additionally, the ConnectSecure application on Windows is also impacted.

Exploitation Mechanism

The exploit for this vulnerability involves leveraging the flaw in SSH Tectia software to escalate privileges locally on Windows systems, potentially enabling malicious actors to execute unauthorized actions.

Mitigation and Prevention

To address CVE-2021-27892, consider the following mitigation strategies:

Immediate Steps to Take

Update SSH Tectia Client and Server to version 6.4.19 or newer on Windows systems.
Monitor system logs for any unusual activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly patch and update SSH Tectia software to the latest versions to guard against known vulnerabilities.
Implement the principle of least privilege to restrict user permissions and mitigate the impact of privilege escalation attacks.

Patching and Updates

Stay informed about security advisories and updates from SSH Tectia to promptly apply patches that address vulnerabilities like CVE-2021-27892.