CVE-2022-41973 : Security Advisory and Response
Learn about CVE-2022-41973, a vulnerability in multipath-tools versions before 0.9.2 allowing local privilege escalation to root. Discover impact, affected systems, exploitation, and mitigation steps.
A vulnerability has been identified in multipath-tools 0.7.7 through 0.9.x before 0.9.2 that allows local users to obtain root access, potentially leading to controlled file writes outside of the designated directory. This CVE can be exploited in conjunction with CVE-2022-41974.
Understanding CVE-2022-41973
This section provides insights into the nature and impact of the vulnerability.
What is CVE-2022-41973?
The CVE-2022-41973 vulnerability in multipath-tools versions before 0.9.2 enables local users with /dev/shm access to modify symlinks in multipathd, facilitating unauthorized controlled file writes beyond the /dev/shm directory.
The Impact of CVE-2022-41973
Exploitation of this vulnerability could result in local privilege escalation to root, posing a significant security risk to affected systems.
Technical Details of CVE-2022-41973
Delve deeper into the technical aspects of the vulnerability.
Vulnerability Description
The flaw arises from incorrect symlink handling in multipathd, allowing unauthorized symlink changes by local users, potentially leading to unauthorized file writes.
Affected Systems and Versions
The vulnerability impacts multipath-tools versions ranging from 0.7.7 to 0.9.x prior to 0.9.2, leaving these systems vulnerable to root access escalation.
Exploitation Mechanism
Local attackers with access to /dev/shm can exploit this vulnerability to manipulate symlinks in multipathd and gain root-level privileges.
Mitigation and Prevention
Explore the recommended actions to mitigate the risks associated with CVE-2022-41973.
Immediate Steps to Take
Users are advised to apply the latest multipath-tools version 0.9.2 or later to address this vulnerability promptly. Restricting access to /dev/shm can also help mitigate the risk.
Long-Term Security Practices
Maintaining good access control policies, regular security updates, and user permissions reviews can enhance the overall security posture of the system.
Patching and Updates
Regularly monitor security advisories and apply patches and updates from the vendor to protect systems from known vulnerabilities.