CVE-2022-33912 : Vulnerability Insights and Analysis
Learn about CVE-2022-33912 impacting Checkmk Debian package, allowing local privilege escalation. Find mitigation steps and updates to enhance system security.
A permission issue affecting users who deployed the shipped version of the Checkmk Debian package poses a local privilege escalation risk on the monitored host.
Understanding CVE-2022-33912
This CVE describes a vulnerability related to the Checkmk Debian package that allows for local privilege escalation on monitored hosts.
What is CVE-2022-33912?
The vulnerability arises from the ownership settings of maintainer scripts within the package, which can be altered by a specific user to execute commands with root privileges.
The Impact of CVE-2022-33912
If exploited, an attacker with access to the system could escalate their privileges locally, compromising the security and integrity of the monitored host.
Technical Details of CVE-2022-33912
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The issue occurs in the maintainer scripts of the Checkmk Debian package, specifically affecting versions 1.6 to 1.6.9p29, 2.0 to 2.0.0p26, 2.1 to 2.1.0p3, and 2.2.0i1.
Affected Systems and Versions
Users deploying the shipped version of the Checkmk Debian package are affected. Packages created by the agent bakery (enterprise editions only) are not vulnerable.
Exploitation Mechanism
By manipulating the maintainer scripts stored at /var/lib/dpkg/info/, a user with specific permissions can modify the files, leading to the execution of arbitrary commands with elevated privileges.
Mitigation and Prevention
To safeguard systems from CVE-2022-33912, immediate actions and long-term security practices are recommended.
Immediate Steps to Take
- Update Checkmk to a patched version that addresses the vulnerability.
- Monitor and restrict access rights to critical system files and directories.
Long-Term Security Practices
- Regularly update software packages and apply security patches promptly.
- Implement the principle of least privilege to limit user permissions.
Patching and Updates
Ensure that all affected systems are updated with the latest patched versions provided by the vendor.