CVE-2018-16721 Denial of service in n/a

High 7.8 Published 23 Nov 2020 Updated 5 Aug 2024

Local attackers can cause a system crash via improper input validation in the Jingyun Antivirus driver, requiring a software update.

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-2018-16721?

CVE-2018-16721 is a high-severity denial of service vulnerability in n/a, published on 23 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.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 0x12360090, a related issue to CVE-2018-16306.

Weakness: CWE-20

Which versions are affected by CVE-2018-16721?

It affects 1 product.

Products include V-Secure Jingyun Antivirus.

How do I fix CVE-2018-16721?

No fix has been published for CVE-2018-16721 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-2018-16721 being exploited?

There is no known exploitation of CVE-2018-16721 in the wild and no public exploit code.

Sources

Also known as GHSA-jgwc-xqm9-2rmm.