CVE-2019-12148 : Security Advisory and Response

Sangoma Session Border Controller (SBC) version 2.3.23-119 GA is vulnerable to an authentication bypass issue through the web interface, allowing unauthorized access without credentials.

Understanding CVE-2019-12148

This CVE identifies a security vulnerability in Sangoma SBC version 2.3.23-119 GA that permits attackers to bypass authentication mechanisms.

What is CVE-2019-12148?

The vulnerability in Sangoma SBC version 2.3.23-119 GA enables malicious actors to enter special characters in the username field, granting them access to the admin web portal without valid login credentials.

The Impact of CVE-2019-12148

Exploiting this vulnerability allows unauthorized users to gain entry to the device's admin web portal without the need for proper authentication, posing a significant security risk.

Technical Details of CVE-2019-12148

Sangoma SBC version 2.3.23-119 GA's authentication bypass vulnerability is detailed below:

Vulnerability Description

The flaw allows attackers to inject special characters into the username field, circumventing authentication and gaining unauthorized access to the admin web portal.

Affected Systems and Versions

Sangoma Session Border Controller (SBC) version 2.3.23-119 GA

Exploitation Mechanism

Attackers inject special characters into the username field to bypass authentication and access the admin web portal.

Mitigation and Prevention

To address CVE-2019-12148, follow these steps:

Immediate Steps to Take

Implement network segmentation to restrict access to critical devices.
Monitor and log web interface access for suspicious activities.

Long-Term Security Practices

Regularly update and patch Sangoma SBC to the latest version.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply patches provided by Sangoma to fix the authentication bypass vulnerability.