CVE-2017-7909 : Exploit Details and Defense Strategies

Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and earlier have a vulnerability related to the Use of Client-Side Authentication.

Understanding CVE-2017-7909

Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior are susceptible to a security issue that allows unauthorized access to restricted web pages.

What is CVE-2017-7909?

This CVE describes a Use of Client-Side Authentication vulnerability in the firmware of Advantech B+B SmartWorx MESR901. The flaw enables malicious actors to bypass client authentication mechanisms and gain unauthorized access to protected web pages.

The Impact of CVE-2017-7909

The vulnerability in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and earlier could lead to unauthorized users accessing restricted web pages, potentially compromising sensitive information and system integrity.

Technical Details of CVE-2017-7909

Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and earlier are affected by this CVE.

Vulnerability Description

The web interface of the affected firmware uses JavaScript for client authentication verification. However, attackers can intercept requests and bypass the authentication process, allowing them to access restricted web pages.

Affected Systems and Versions

Product: Advantech B+B SmartWorx MESR901
Version: 1.5.2 and earlier

Exploitation Mechanism

Malicious actors intercept requests to the web interface and circumvent the client authentication mechanism, gaining unauthorized access to restricted web pages.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-7909.

Immediate Steps to Take

Update the firmware to the latest version provided by the vendor.
Monitor network traffic for any suspicious activity.
Restrict access to the web interface to authorized personnel only.

Long-Term Security Practices

Regularly review and update security configurations.
Conduct security training for personnel to recognize and respond to potential threats.

Patching and Updates

Apply security patches and updates promptly to mitigate known vulnerabilities and enhance system security.