CVE-2019-12324 : Exploit Details and Defense Strategies

A vulnerability in the IP address field for the logging server in the Akuvox R50P VoIP phone allows an authenticated remote attacker to execute OS commands.

Understanding CVE-2019-12324

The Akuvox R50P VoIP phone with firmware 50.0.6.156 is susceptible to a command injection vulnerability due to inadequate input validation.

What is CVE-2019-12324?

The vulnerability in the IP address field of the phone's configuration web interface enables a remote attacker within the same network to run OS commands by exploiting shell metacharacters in a POST request.

The Impact of CVE-2019-12324

The vulnerability has a CVSS base score of 7.2, indicating a high severity level with significant impacts on confidentiality, integrity, and availability. The attack complexity is low, and high privileges are required for exploitation.

Technical Details of CVE-2019-12324

The technical aspects of the vulnerability provide insight into its nature and potential risks.

Vulnerability Description

The issue arises from the lack of input validation in the IP address field for the logging server, allowing attackers to execute arbitrary OS commands.

Affected Systems and Versions

Product: Akuvox R50P VoIP phone
Vendor: Akuvox
Firmware Version: 50.0.6.156

Exploitation Mechanism

Attack Vector: Network
Privileges Required: High
User Interaction: None
Scope: Unchanged
Attack Complexity: Low
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Mitigation and Prevention

Protecting systems from CVE-2019-12324 involves immediate actions and long-term security practices.

Immediate Steps to Take

Disable remote access to the configuration web interface if not required.
Implement network segmentation to restrict access to vulnerable devices.
Apply vendor-supplied patches or updates promptly.

Long-Term Security Practices

Regularly monitor and audit network traffic for suspicious activities.
Conduct security training for users to recognize and report potential threats.
Keep systems and firmware up to date to address known vulnerabilities.
Employ strong authentication mechanisms to prevent unauthorized access.
Consider implementing additional security layers such as intrusion detection systems.

Patching and Updates

Check for firmware updates from Akuvox and apply them as soon as they are available to mitigate the vulnerability effectively.