CVE-2019-3581 McAfee Web Gateway denial of service attack due to Improper Input Validation

High 7.5 Published 9 Jan 2019 Updated 4 Aug 2024

Remote attackers can cause a denial of service in McAfee Web Gateway by sending a crafted HTTP request parameter due to improper input validation.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-3581?

CVE-2019-3581 is a high-severity denial of service vulnerability in McAfee Web Gateway, published on 9 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Improper input validation in the proxy component of McAfee Web Gateway 7.8.2.0 and later allows remote attackers to cause a denial of service via a crafted HTTP request parameter.

Weakness: CWE-20

Which versions are affected by CVE-2019-3581?

It affects 1 product.

Products include Mcafee Mcafee Web Gateway.

How do I fix CVE-2019-3581?

No fix has been published for CVE-2019-3581 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-2019-3581 being exploited?

There is no known exploitation of CVE-2019-3581 in the wild and no public exploit code.

Sources

Also known as GHSA-f233-9p3q-5vq9.