CVE-2021-30121 Explained : Impact and Mitigation
Learn about CVE-2021-30121, a medium-severity vulnerability in Kaseya VSA versions below 9.5.6. Understand the impact, affected systems, exploitation, and mitigation steps.
A detailed overview of the (Semi-)Authenticated local file inclusion vulnerability in Kaseya VSA versions below 9.5.6.
Understanding CVE-2021-30121
This section provides insights into the nature and implications of the CVE-2021-30121 vulnerability.
What is CVE-2021-30121?
The vulnerability involves semi-authenticated local file inclusion in Kaseya VSA versions prior to 9.5.6. Attackers can retrieve the contents of arbitrary files through the webserver with a specific request.
The Impact of CVE-2021-30121
With a CVSS base score of 6.5, this medium-severity vulnerability can lead to high confidentiality impact, allowing attackers to access sensitive information stored on the system.
Technical Details of CVE-2021-30121
In-depth technical aspects and information related to the CVE-2021-30121 vulnerability.
Vulnerability Description
The flaw allows for the retrieval of arbitrary file contents via a webserver request, requiring a valid session ID that can be easily obtained using another CVE-2021-30118 exploit.
Affected Systems and Versions
All Kaseya VSA versions below 9.5.6 are susceptible to this vulnerability, potentially impacting systems that have not been updated to the recommended version.
Exploitation Mechanism
Attackers can send a crafted request to the webserver, leveraging the (Semi-)Authenticated local file inclusion to access and retrieve sensitive files stored on the server.
Mitigation and Prevention
Effective strategies to mitigate the risks associated with CVE-2021-30121.
Immediate Steps to Take
It is crucial to upgrade Kaseya VSA to a version above 9.5.6 to eliminate this vulnerability and enhance system security.
Long-Term Security Practices
Implement regular security patches, conduct security assessments, and follow cybersecurity best practices to safeguard against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates released by Kaseya and promptly apply patches to secure the environment against potential threats.