CVE-2017-7185 : What You Need to Know

Cesanta Mongoose Embedded Web Server Library versions 6.7 and below, as well as Mongoose OS versions 1.2 and below, are affected by a use-after-free vulnerability that can be exploited by remote attackers.

Understanding CVE-2017-7185

This CVE involves a vulnerability in the mg_http_multipart_wait_for_boundary function in the Cesanta Mongoose Embedded Web Server Library.

What is CVE-2017-7185?

The vulnerability allows remote attackers to cause a crash or denial of service by sending a multipart/form-data POST request without including a MIME boundary string.

The Impact of CVE-2017-7185

The use-after-free vulnerability in the affected library and OS versions can lead to a denial of service (crash) when exploited by attackers.

Technical Details of CVE-2017-7185

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability exists in the mg_http_multipart_wait_for_boundary function in Cesanta Mongoose Embedded Web Server Library versions 6.7 and earlier, as well as Mongoose OS versions 1.2 and earlier.

Affected Systems and Versions

Cesanta Mongoose Embedded Web Server Library versions 6.7 and below
Mongoose OS versions 1.2 and below

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a multipart/form-data POST request without a MIME boundary string.

Mitigation and Prevention

Protecting systems from CVE-2017-7185 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by the vendor to address the vulnerability
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update software and firmware to the latest versions
Implement network segmentation to limit the impact of potential attacks

Patching and Updates

Check for and apply any security updates or patches released by Cesanta for the affected library and OS versions