CVE-2019-1839 : Exploit Details and Defense Strategies
Learn about CVE-2019-1839, a vulnerability in Cisco Remote PHY Device Software allowing attackers to execute commands with root privileges. Find mitigation steps and patching details here.
Cisco Remote PHY Device Software Command Injection Vulnerability
Understanding CVE-2019-1839
What is CVE-2019-1839?
A vulnerability in Cisco Remote PHY Device Software allows an authenticated local attacker to execute commands with root privileges on the affected device's Linux shell due to inadequate input sanitization.
The Impact of CVE-2019-1839
The vulnerability enables attackers to run arbitrary commands as the root user, leading to complete system compromise.
Technical Details of CVE-2019-1839
Vulnerability Description
The flaw in Cisco Remote PHY Device Software results from insufficient sanitization of user input, enabling attackers to execute commands with root privileges.
Affected Systems and Versions
- Product: Cisco Remote PHY
- Vendor: Cisco
- Versions Affected: Less than 6.4
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Local
- Privileges Required: High
- User Interaction: None
- Impact: High confidentiality, integrity, and availability
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches promptly
- Restrict network access to affected devices
- Monitor for any unauthorized access or unusual activities
Long-Term Security Practices
- Regularly update and patch software and firmware
- Implement the principle of least privilege for user access
- Conduct security training and awareness programs for staff
Patching and Updates
- Refer to the vendor's security advisory for patch availability and installation instructions