CVE-2017-6094 : Exploit Details and Defense Strategies

CVE-2017-6094 was published on December 20, 2017, by MITRE. It involves a vulnerability in Genexis B.V. GAPS versions up to 7.2 that allows unauthorized access to sensitive information through forged configuration settings.

Understanding CVE-2017-6094

This CVE entry highlights a security issue in Genexis B.V. GAPS that could lead to unauthorized access to subscribers' sensitive data.

What is CVE-2017-6094?

The vulnerability allows attackers to forge valid configuration settings for subscribers' CPEs, potentially exposing credentials like usernames and passwords for VoIP services.

The Impact of CVE-2017-6094

The vulnerability enables unauthorized access to configuration settings of other subscribers' CPEs, compromising sensitive information.

Technical Details of CVE-2017-6094

This section delves into the specifics of the vulnerability.

Vulnerability Description

By reverse engineering the CPE's firmware, the algorithm for computing the "chk" value from the MAC address is exposed, enabling the forging of valid configuration settings.

Affected Systems and Versions

Genexis B.V. GAPS versions up to 7.2

Exploitation Mechanism

Attackers can create valid "chk" values for any MAC address, gaining access to configuration settings and sensitive data.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Genexis B.V. GAPS to a patched version if available
Monitor network activity for any unauthorized access

Long-Term Security Practices

Implement strong access controls and authentication mechanisms
Regularly audit and review configuration settings for anomalies

Patching and Updates

Apply security patches provided by Genexis B.V. promptly to address this vulnerability