CVE-2023-49935 : What You Need to Know
Discover the impact of CVE-2023-49935 affecting SchedMD Slurm 23.02.x and 23.11.x. Learn how unauthorized token reuse poses security risks and how to mitigate the vulnerability.
A security vulnerability has been discovered in SchedMD Slurm 23.02.x and 23.11.x that could allow an attacker to bypass message integrity control and reuse root-level authentication tokens. This CVE affects versions 23.02.7 and 23.11.1.
Understanding CVE-2023-49935
This section provides an overview of the CVE-2023-49935 vulnerability in SchedMD Slurm.
What is CVE-2023-49935?
CVE-2023-49935 highlights Incorrect Access Control in SchedMD Slurm, specifically due to a slurmd Message Integrity Bypass, enabling unauthorized reuse of root-level authentication tokens.
The Impact of CVE-2023-49935
The vulnerability allows an attacker to bypass RPC message hashes that protect system integrity, leading to the reuse of MUNGE credentials, compromising system security.
Technical Details of CVE-2023-49935
This section delves into the technical aspects of CVE-2023-49935.
Vulnerability Description
The vulnerability stems from a flaw in the slurmd process, enabling attackers to interact with the process and reuse root-level authentication tokens.
Affected Systems and Versions
SchedMD Slurm versions 23.02.x and 23.11.x are affected by this vulnerability, with fixed versions identified as 23.02.7 and 23.11.1.
Exploitation Mechanism
Attackers exploit the flaw to bypass RPC message hashes, facilitating unauthorized reuse of root-level authentication tokens during interactions with the slurmd process.
Mitigation and Prevention
This section outlines strategies to mitigate and prevent exploitation of CVE-2023-49935.
Immediate Steps to Take
Immediately apply the fixed versions 23.02.7 and 23.11.1 to prevent unauthorized reuse of authentication tokens and enhance system security.
Long-Term Security Practices
Implement strong access controls, regular security patches, and ongoing monitoring to prevent similar vulnerabilities in the future.
Patching and Updates
Regularly update SchedMD Slurm to the latest versions to ensure protection against known vulnerabilities and maintain system integrity.