CVE-2018-10926 Explained : Impact and Mitigation
Learn about CVE-2018-10926, a high-severity vulnerability in glusterfs server allowing unauthorized code execution. Find mitigation steps and necessary updates here.
Researchers discovered a vulnerability in the gfs3_mknod_req RPC request, affecting the glusterfs server. This flaw could allow a malicious authenticated user to execute unauthorized code and write files to any location on a glusterfs server node.
Understanding CVE-2018-10926
This CVE involves a path traversal vulnerability in the glusterfs server, potentially leading to arbitrary code execution.
What is CVE-2018-10926?
A flaw in the gfs3_mknod_req RPC request supported by the glusterfs server could be exploited by an authenticated attacker to write files to arbitrary locations and execute unauthorized code.
The Impact of CVE-2018-10926
- CVSS Base Score: 8.1 (High)
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
Technical Details of CVE-2018-10926
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows a malicious authenticated user to perform path traversal, enabling them to write files to any location and execute unauthorized code on a glusterfs server node.
Affected Systems and Versions
- Affected Product: glusterfs
- Vendor: Red Hat
- Affected Version: Not applicable
Exploitation Mechanism
The flaw can be exploited by an authenticated attacker leveraging the gfs3_mknod_req RPC request to write files to arbitrary locations and execute unauthorized code.
Mitigation and Prevention
Protecting systems from CVE-2018-10926 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security updates provided by Red Hat promptly.
- Monitor for any unauthorized access or file modifications on glusterfs servers.
- Restrict network access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Implement strong authentication mechanisms to prevent unauthorized access.
- Conduct regular security audits and penetration testing.
Patching and Updates
- Red Hat has released security updates to address this vulnerability. Ensure all glusterfs servers are updated with the latest patches.