CVE-2018-18567 : Vulnerability Insights and Analysis

AudioCodes 440HD and 450HD devices are vulnerable to man-in-the-middle attacks due to a lack of X.509 certificate validation when used with Skype for Business on-premise installations.

Understanding CVE-2018-18567

This CVE involves a critical vulnerability in AudioCodes IP phones that can be exploited by attackers to obtain sensitive credential information.

What is CVE-2018-18567?

Man-in-the-middle attackers can exploit the absence of X.509 certificate validation in AudioCodes 440HD and 450HD devices.
Specifically affects versions 3.1.2.89 and earlier when used with on-premise Skype for Business installations.
Attackers can intercept and obtain sensitive credential data due to this security flaw.

The Impact of CVE-2018-18567

Allows attackers to eavesdrop on communication and potentially steal sensitive information.
Compromises the confidentiality and integrity of data transmitted through affected devices.

Technical Details of CVE-2018-18567

AudioCodes 440HD and 450HD devices are susceptible to man-in-the-middle attacks due to the lack of X.509 certificate validation.

Vulnerability Description

Attackers can exploit the vulnerability to intercept and collect sensitive credential information.

Affected Systems and Versions

AudioCodes 440HD and 450HD devices versions 3.1.2.89 and earlier are impacted.

Exploitation Mechanism

The vulnerability arises when these devices are used alongside on-premise installations of Skype for Business, enabling attackers to perform man-in-the-middle attacks.

Mitigation and Prevention

Immediate Steps to Take

Disable the affected devices or restrict their usage until a patch is available.
Implement network segmentation to isolate vulnerable devices from critical systems. Long-Term Security Practices
Regularly update and patch all AudioCodes devices to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Educate users on secure communication practices and the risks of unsecured connections.