CVE-2018-10914 : Exploit Details and Defense Strategies
Learn about CVE-2018-10914, a vulnerability in glusterfs that allows attackers to trigger a crash in the gluster brick process, potentially leading to a denial of service attack. Find mitigation steps and patching details here.
A vulnerability in glusterfs allows attackers to trigger a crash in the gluster brick process, leading to remote denial of service.
Understanding CVE-2018-10914
This CVE involves a vulnerability in glusterfs that can be exploited to cause a crash in the gluster brick process, potentially resulting in a denial of service attack.
What is CVE-2018-10914?
The vulnerability enables attackers to crash the gluster brick process through a xattr request via glusterfs FUSE, potentially leading to a remote denial of service. Enabling gluster multiplexing can worsen the impact by causing multiple bricks and gluster volumes to crash.
The Impact of CVE-2018-10914
- CVSS Base Score: 5.5 (Medium Severity)
- Attack Vector: Adjacent Network
- Attack Complexity: Low
- Privileges Required: Low
- Confidentiality, Integrity, and Availability Impact: Low
- The vulnerability can be exploited remotely to cause a denial of service, particularly affecting systems with gluster multiplexing enabled.
Technical Details of CVE-2018-10914
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows attackers to crash the gluster brick process through a xattr request via glusterfs FUSE, potentially leading to a remote denial of service.
Affected Systems and Versions
- Affected Product: glusterfs
- Vendor: Red Hat
- Affected Version: n/a
Exploitation Mechanism
Attackers can exploit the vulnerability by sending a malicious xattr request via glusterfs FUSE, triggering a crash in the gluster brick process.
Mitigation and Prevention
Protecting systems from CVE-2018-10914 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security updates provided by Red Hat and other relevant vendors.
- Disable gluster multiplexing if not essential for system operations.
- Monitor system logs for any unusual activities related to glusterfs.
Long-Term Security Practices
- Regularly update and patch glusterfs and related software to address security vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Refer to vendor advisories such as RHSA-2018:2607, RHSA-2018:2608, and RHSA-2018:3470 for patching instructions and updates.