CVE-2018-6203 Denial of service in n/a

High 7.8 Published 25 Jan 2018 Updated 17 Sep 2024

Local attackers can cause a system crash (BSOD) in eScan Antivirus due to improper input validation in the kernel driver.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-6203?

CVE-2018-6203 is a high-severity denial of service vulnerability in n/a, published on 25 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In eScan Antivirus 14.0.1400.2029, the driver file (econceal.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x8300210C.

Weakness: CWE-20

Which versions are affected by CVE-2018-6203?

It affects 1 product.

Products include Escanav Anti-Virus.

How do I fix CVE-2018-6203?

No fix has been published for CVE-2018-6203 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-6203 being exploited?

There is no known exploitation of CVE-2018-6203 in the wild and no public exploit code.

Sources

Also known as GHSA-g2x9-4fjq-3g27.