CVE-2019-3586 McAfee Endpoint Security firewall not always acting on GTI lookup results

High 7.5 Published Updated

Attackers can bypass McAfee Endpoint Security firewall protections by manipulating GTI reputation data to prevent blocking of malicious IP addresses.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2019-3586?

CVE-2019-3586 is a high-severity vulnerability in McAfee, LLC McAfee Endpoint Security (ENS), published on 15 May 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Protection Mechanism Failure in the Firewall in McAfee Endpoint Security (ENS) 10.x prior to 10.6.1 May 2019 update allows context-dependent attackers to circumvent ENS protection where GTI flagged IP addresses are not blocked by the ENS Firewall via specially crafted malicious sites where the GTI reputation is carefully manipulated and does not correctly trigger the ENS Firewall to block the connection.

Weakness: CWE-693

Which versions are affected by CVE-2019-3586?

It affects 1 product.

Products include Mcafee Endpoint Security.

How do I fix CVE-2019-3586?

No fix has been published for CVE-2019-3586 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-3586 being exploited?

There is no known exploitation of CVE-2019-3586 in the wild and no public exploit code.

Sources

Also known as GHSA-ggq9-q258-r9g6.

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