CVE-2019-14259 : Exploit Details and Defense Strategies
Learn about CVE-2019-14259 affecting Polycom Obihai Obi1022 VoIP phone with firmware 5.1.11. Understand the impact, technical details, and mitigation steps for this command injection vulnerability.
Polycom Obihai Obi1022 VoIP phone with firmware version 5.1.11 is vulnerable to command injection due to lack of input validation in the NTP server IP address field.
Understanding CVE-2019-14259
This CVE involves a vulnerability in the Polycom Obihai Obi1022 VoIP phone that allows an authenticated remote attacker to execute arbitrary operating system commands.
What is CVE-2019-14259?
The vulnerability in the NTP server IP address field of the "Time Service Settings web" interface enables a remote attacker on the same network to inject malicious shell commands through a POST request.
The Impact of CVE-2019-14259
An attacker exploiting this vulnerability could execute unauthorized commands on the affected device, potentially leading to system compromise or unauthorized access.
Technical Details of CVE-2019-14259
The following technical details outline the specifics of this vulnerability.
Vulnerability Description
The vulnerability arises from the absence of input validation in the NTP server IP address field, allowing attackers to inject malicious commands.
Affected Systems and Versions
- Product: Polycom Obihai Obi1022 VoIP phone
- Firmware Version: 5.1.11
Exploitation Mechanism
- Attackers need to be authenticated on the same network to exploit the vulnerability.
- By submitting malicious shell commands through a POST request, attackers can execute arbitrary OS commands.
Mitigation and Prevention
To address CVE-2019-14259, consider the following mitigation strategies.
Immediate Steps to Take
- Disable remote access to the affected device if not required.
- Implement network segmentation to limit access to vulnerable devices.
- Regularly monitor and analyze network traffic for suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify vulnerabilities.
- Keep firmware and software up to date to patch known security issues.
Patching and Updates
- Apply patches or updates provided by the vendor to fix the command injection vulnerability.