CVE-2018-5218 : Security Advisory and Response

K7 Antivirus 15.1.0306 is vulnerable to a denial of service attack due to a lack of input value validation in the driver file K7Sentry.sys.

Understanding CVE-2018-5218

This CVE identifies a vulnerability in K7 Antivirus 15.1.0306 that could be exploited by local users to trigger a denial of service (BSOD) or potentially cause other unknown consequences.

What is CVE-2018-5218?

The driver file (K7Sentry.sys) in K7 Antivirus 15.1.0306 lacks input value validation in IOCtl 0x950025b0, allowing local users to exploit it for a denial of service attack.

The Impact of CVE-2018-5218

The vulnerability could lead to a denial of service (BSOD) or other unspecified consequences when exploited by local users.

Technical Details of CVE-2018-5218

K7 Antivirus 15.1.0306 is affected by the following:

Vulnerability Description

The driver file (K7Sentry.sys) in K7 Antivirus 15.1.0306 lacks input value validation in IOCtl 0x950025b0, enabling local users to trigger a denial of service attack.

Affected Systems and Versions

Product: K7 Antivirus 15.1.0306
Vendor: K7
Version: Not available

Exploitation Mechanism

The vulnerability can be exploited by local users to cause a denial of service (BSOD) or other unknown consequences.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-5218:

Immediate Steps to Take

Update K7 Antivirus to the latest version.
Monitor for any unusual system behavior.
Restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch all software and drivers.
Implement the principle of least privilege to limit user access.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Apply patches and updates provided by K7 to fix the vulnerability in K7 Antivirus 15.1.0306.