CVE-2021-27893 : Security Advisory and Response
Learn about CVE-2021-27893, a vulnerability in SSH Tectia Client and Server allowing local privilege escalation on Windows systems. Find out the impact, affected versions, and mitigation steps.
SSH Tectia Client and Server before version 6.4.19 on Windows have a vulnerability that allows local privilege escalation under nonstandard conditions. This affects ConnectSecure on Windows.
Understanding CVE-2021-27893
This CVE refers to a security issue in SSH Tectia Client and Server that can lead to local privilege escalation in certain scenarios.
What is CVE-2021-27893?
CVE-2021-27893 is a vulnerability in SSH Tectia Client and Server versions prior to 6.4.19 on Windows. It enables attackers to escalate their privileges locally, especially under nonstandard conditions.
The Impact of CVE-2021-27893
The impact of this CVE is significant as it allows attackers to gain elevated privileges on the affected Windows systems, potentially leading to further exploitation and compromise.
Technical Details of CVE-2021-27893
This section provides more in-depth technical details regarding the vulnerability.
Vulnerability Description
The vulnerability in SSH Tectia Client and Server before version 6.4.19 on Windows allows for local privilege escalation, posing a serious security risk.
Affected Systems and Versions
SSH Tectia Client and Server versions prior to 6.4.19 on Windows are affected by CVE-2021-27893, along with ConnectSecure on Windows.
Exploitation Mechanism
Attackers can exploit this vulnerability to escalate their privileges locally on Windows systems, bypassing security controls.
Mitigation and Prevention
To prevent exploitation of CVE-2021-27893, immediate actions and long-term security practices are essential.
Immediate Steps to Take
Users should apply security patches, updates, or workarounds provided by the vendor to mitigate the risk associated with this vulnerability.
Long-Term Security Practices
Implementing robust security measures, restricting user privileges, and monitoring for suspicious activities can enhance overall system security.
Patching and Updates
Regularly applying security patches and updates for SSH Tectia Client and Server is crucial to address vulnerabilities like CVE-2021-27893.