CVE-2018-10928 : Security Advisory and Response
Discover the impact of CVE-2018-10928, a high-severity vulnerability in glusterfs server allowing unauthorized code execution. Learn mitigation steps and Red Hat's security advisories.
A vulnerability was discovered in the glusterfs server that allows authenticated attackers to create symlinks pointing to any location on the server, potentially leading to unauthorized code execution.
Understanding CVE-2018-10928
This CVE relates to a flaw in the glusterfs server that enables symlink destinations to reference file paths outside of the gluster volume.
What is CVE-2018-10928?
This vulnerability in glusterfs arises when processing RPC requests with gfs3_symlink_req, allowing attackers to create symlinks pointing to unauthorized locations on the server.
The Impact of CVE-2018-10928
- CVSS Base Score: 8.8 (High)
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2018-10928
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The flaw in RPC request processing using gfs3_symlink_req in glusterfs allows authenticated attackers to create arbitrary symlinks pointing anywhere on the server.
Affected Systems and Versions
- Affected Product: glusterfs
- Vendor: Red Hat
- Affected Version: n/a
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging the symlink creation capability to execute unauthorized code on glusterfs server nodes.
Mitigation and Prevention
Protecting systems from CVE-2018-10928 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches and updates promptly.
- Monitor and restrict access to critical server locations.
- Implement network segmentation to limit the attack surface.
Long-Term Security Practices
- Regularly update and patch all software components.
- Conduct security audits and penetration testing to identify vulnerabilities.
- Educate users and administrators on secure coding practices and social engineering awareness.
Patching and Updates
- Red Hat has released security advisories (RHSA-2018:2607, RHSA-2018:2608, RHSA-2018:3470) addressing this vulnerability.
- Refer to the provided URLs for detailed information on the security updates.