CVE-2019-7439 : Exploit Details and Defense Strategies

JioFi 4G M2S 1.0.2 devices are vulnerable to a Denial of Service (Hang) attack due to a flaw in the cgi-bin/qcmap_web_cgi script.

Understanding CVE-2019-7439

An issue affecting JioFi 4G M2S 1.0.2 devices that allows for a Denial of Service attack.

What is CVE-2019-7439?

The vulnerability in the cgi-bin/qcmap_web_cgi script on JioFi 4G M2S 1.0.2 devices enables attackers to conduct a Denial of Service (Hang) attack by exploiting a specific POST parameter.

The Impact of CVE-2019-7439

Attackers can exploit the vulnerability to cause a Denial of Service condition on the affected devices.
This could lead to service disruption and unresponsiveness of the device.

Technical Details of CVE-2019-7439

Details about the vulnerability and affected systems.

Vulnerability Description

The vulnerability in the cgi-bin/qcmap_web_cgi script on JioFi 4G M2S 1.0.2 devices allows for a Denial of Service (Hang) attack through a specific POST parameter.

Affected Systems and Versions

Product: JioFi 4G M2S 1.0.2
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Attackers exploit the mask POST parameter in the cgi-bin/qcmap_web_cgi script to trigger a Denial of Service (Hang) attack.

Mitigation and Prevention

Ways to address and prevent the CVE-2019-7439 vulnerability.

Immediate Steps to Take

Disable remote access to the affected devices if not required.
Monitor network traffic for any suspicious activities.
Implement firewall rules to restrict unauthorized access.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Check for security updates and patches from the device manufacturer.
Apply recommended patches promptly to mitigate the vulnerability.