CVE-2017-8330 : What You Need to Know

A vulnerability has been discovered on Securifi Almond, Almond+, and Almond 2015 devices with firmware AL-R096. The vulnerability allows for a crash of the miniupnpd process when a SOAP parameter called "NewInMessage" is passed with a large payload.

Understanding CVE-2017-8330

This CVE pertains to a specific vulnerability found in Securifi Almond, Almond+, and Almond 2015 devices with firmware AL-R096.

What is CVE-2017-8330?

The vulnerability in Securifi Almond devices occurs when a SOAP parameter named "NewInMessage" is sent with a substantial payload, causing the miniupnpd process to crash.

The Impact of CVE-2017-8330

The vulnerability allows attackers to crash the miniupnpd process on affected devices, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2017-8330

This section delves into the technical aspects of the CVE.

Vulnerability Description

The SOAP parameter "NewInMessage" triggers a crash in the miniupnpd process when a large payload is passed.
The vulnerable binary responsible for receiving the SOAP request values is "miniupnpd".

Affected Systems and Versions

Devices affected: Securifi Almond, Almond+, and Almond 2015
Firmware version: AL-R096

Exploitation Mechanism

By sending a SOAP request with a large payload to the "NewInMessage" parameter, attackers can crash the miniupnpd process.
Analysis in IDA-pro reveals the MIPS little endian format and the specific function responsible for the crash.

Mitigation and Prevention

Protecting systems from CVE-2017-8330 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable UPnP functionality on affected devices if possible.
Implement network segmentation to isolate vulnerable devices.
Monitor network traffic for suspicious SOAP requests.

Long-Term Security Practices

Regularly update firmware to patch known vulnerabilities.
Conduct security assessments and penetration testing on IoT devices.

Patching and Updates

Apply firmware updates provided by Securifi to address the vulnerability.