CVE-2017-7920 : What You Need to Know

An Improper Authentication issue was discovered in ABB VSN300 WiFi Logger Card versions 1.8.15 and prior, and VSN300 WiFi Logger Card for React versions 2.1.3 and prior. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access internal information about status and connected devices without authenticating.

Understanding CVE-2017-7920

This CVE involves an authentication problem in specific versions of the ABB VSN300 WiFi Logger Card, potentially allowing unauthorized access to sensitive information.

What is CVE-2017-7920?

CVE-2017-7920 is an Improper Authentication vulnerability affecting ABB VSN300 WiFi Logger Card versions 1.8.15 and earlier, as well as VSN300 WiFi Logger Card for React versions 2.1.3 and earlier.

The Impact of CVE-2017-7920

The vulnerability enables a potential attacker to gain access to internal information about the status and connected devices without the need for authentication, simply by accessing a specific URL on the web server.

Technical Details of CVE-2017-7920

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The ABB VSN300 WiFi Logger Card versions 1.8.15 and earlier, along with the VSN300 WiFi Logger Card for React versions 2.1.3 and earlier, are susceptible to an authentication bypass issue.

Affected Systems and Versions

Product: ABB VSN300 WiFi Logger Card
Versions Affected: 1.8.15 and earlier
Product: VSN300 WiFi Logger Card for React
Versions Affected: 2.1.3 and earlier

Exploitation Mechanism

By accessing a specific URL on the web server, an attacker can exploit the vulnerability to access internal information without the need for authentication.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update the affected ABB VSN300 WiFi Logger Card and VSN300 WiFi Logger Card for React to the latest versions available.
Implement network segmentation to restrict access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly review and update security configurations on all network-connected devices.
Conduct security training for personnel to raise awareness of potential threats and best practices.

Patching and Updates

Stay informed about security advisories and updates from ABB regarding the affected products.
Apply patches and firmware updates promptly to mitigate the risk of exploitation.