CVE-2021-23556 Explained : Impact and Mitigation
Discover the impact of CVE-2021-23556, an Exposed Dangerous Method or Function vulnerability in Guake < 3.8.5. Learn about affected systems, exploitation, and mitigation strategies.
A vulnerability labeled as Exposed Dangerous Method or Function has been discovered in the package guake before version 3.8.5, allowing a malicious user to run arbitrary commands through the execute_command and execute_command_by_uuid methods.
Understanding CVE-2021-23556
This section provides detailed insights into the nature, impact, and mitigation strategies related to the Exposed Dangerous Method or Function vulnerability.
What is CVE-2021-23556?
The CVE-2021-23556 vulnerability refers to the exposure of execute_command and execute_command_by_uuid methods in the guake package prior to version 3.8.5. This exposure enables a malicious user to execute arbitrary commands via the d-bus method.
The Impact of CVE-2021-23556
With a CVSS base score of 6.4 and a base severity of MEDIUM, the vulnerability poses a significant threat. The confidentiality impact is rated as HIGH, while the integrity impact is assessed as LOW. Exploitation involves a HIGH attack complexity through network vectors, with LOW privileges required.
Technical Details of CVE-2021-23556
Let's delve deeper into the technical aspects of CVE-2021-23556 to understand its implications and potential risks.
Vulnerability Description
The vulnerability arises from the exposure of critical methods in the guake package, allowing unauthorized command execution via the d-bus interface.
Affected Systems and Versions
Systems running guake versions prior to 3.8.5 are vulnerable to this exploit. It is crucial for users to update to the latest secure version immediately.
Exploitation Mechanism
To exploit CVE-2021-23556, a malicious actor needs to have another malicious program installed that can send dbus signals or execute terminal commands.
Mitigation and Prevention
Addressing CVE-2021-23556 promptly is essential to prevent potential security breaches and unauthorized access.
Immediate Steps to Take
Users should update their guake package to version 3.8.5 or newer to eliminate this vulnerability and enhance system security.
Long-Term Security Practices
Implementing strict access controls, monitoring system logs, and conducting regular security audits can help mitigate similar risks in the future.
Patching and Updates
Keep systems and software up to date with the latest patches and security updates to ensure protection against emerging threats.