CVE-2019-3827 : Vulnerability Insights and Analysis
Learn about CVE-2019-3827, a vulnerability in gvfs before version 1.39.4 that enables privileged users to read and modify files without authentication, potentially leading to privilege escalation. Find out how to mitigate this flaw.
A flaw in gvfs prior to version 1.39.4 allows privileged users to read and modify files without authentication, potentially leading to privilege escalation.
Understanding CVE-2019-3827
What is CVE-2019-3827?
An incorrect permission check in the administrative backend of gvfs before version 1.39.4 allows privileged users to access and modify any file without requiring a password, under specific system configurations.
The Impact of CVE-2019-3827
This vulnerability enables malicious programs executed by users in the wheel group to escalate their privileges and modify system files without user consent, potentially leading to unauthorized system changes.
Technical Details of CVE-2019-3827
Vulnerability Description
The flaw in gvfs prior to version 1.39.4 allows privileged users to bypass authentication and access/modify files, leading to potential privilege escalation.
Affected Systems and Versions
- Product: gvfs
- Vendor: [UNKNOWN]
- Versions Affected: 1.39.4
Exploitation Mechanism
- Attack Complexity: HIGH
- Attack Vector: LOCAL
- Privileges Required: NONE
- User Interaction: REQUIRED
- Scope: UNCHANGED
- Confidentiality, Integrity, and Availability Impact: HIGH
Mitigation and Prevention
Immediate Steps to Take
- Update gvfs to version 1.39.4 or later to mitigate the vulnerability.
- Implement proper authentication mechanisms to prevent unauthorized access.
Long-Term Security Practices
- Regularly review and update system configurations to ensure secure permissions.
- Monitor and restrict user privileges to minimize the impact of potential exploits.
Patching and Updates
- Apply security patches and updates provided by the vendor to address known vulnerabilities.