CVE-2018-5546 Explained : Impact and Mitigation
Learn about CVE-2018-5546, a vulnerability in F5 Networks, Inc.'s BIG-IP APM client for Linux and macOS versions prior to 7.1.7.1. Understand the impact, affected systems, exploitation risks, and mitigation steps.
In August 2018, CVE-2018-5546 was published, highlighting a vulnerability in F5 Networks, Inc.'s BIG-IP APM client for Linux and macOS versions prior to 7.1.7.1.
Understanding CVE-2018-5546
What is CVE-2018-5546?
The vulnerability in F5 BIG-IP APM client versions prior to 7.1.7.1 for Linux and macOS allows an unauthorized user with limited privileges to potentially gain control of root-owned files on the local client host, leading to unauthorized access and potential data manipulation.
The Impact of CVE-2018-5546
This vulnerability could result in unauthorized access to confidential data, tampering with specific information, or obtaining super-user privileges on the affected client host.
Technical Details of CVE-2018-5546
Vulnerability Description
The svpn and policyserver components of the F5 BIG-IP APM client run with elevated privileges, enabling a local unprivileged user to take ownership of root-owned files on the client host.
Affected Systems and Versions
- Product: BIG-IP APM client for Linux
- Vendor: F5 Networks, Inc.
- Affected Versions: Prior to version 7.1.7.1
- Product: BIG-IP APM client for macOS
- Vendor: F5 Networks, Inc.
- Affected Versions: Prior to version 7.1.7.1
Exploitation Mechanism
The design flaw in the svpn and policyserver components allows unauthorized users to exploit the elevated privileges to gain control of root-owned files, potentially leading to unauthorized access and data manipulation.
Mitigation and Prevention
Immediate Steps to Take
- Update the affected F5 BIG-IP APM client to version 7.1.7.1 or later to mitigate the vulnerability.
- Monitor for any unauthorized access or unusual activities on the client host.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user access rights.
- Regularly review and update security configurations to prevent similar vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by F5 Networks, Inc. to address known vulnerabilities in the BIG-IP APM client.