CVE-2019-3643 MWG scanners updated to address CVE-2019-9511
Remote attackers can cause a denial of service in McAfee Web Gateway scanning proxies by exploiting HTTP/2 rapid reset attacks.
- 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-2019-3643?
CVE-2019-3643 is a medium-severity denial of service vulnerability in McAfee, LLC McAfee Web Gateway (MWG), published on 11 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9511, potentially leading to a denial of service. This affects the scanning proxies.
Which versions are affected by CVE-2019-3643?
It affects 4 products.
Products include Mcafee Active Response, Mcafee Advanced Threat Defense, Mcafee Enterprise Security Manager, Mcafee Web Gateway.
How do I fix CVE-2019-3643?
No fix has been published for CVE-2019-3643 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-2019-3643 being exploited?
There is no known exploitation of CVE-2019-3643 in the wild and no public exploit code.
Other vulnerabilities in McAfee, LLC McAfee Web Gateway (MWG)
- CVE-2020-7289 Privilege Escalation vulnerability in MAR for Windows
- CVE-2020-7290 Privilege Escalation vulnerability in MAR for Linux
- CVE-2020-7291 Privilege Escalation vulnerability MAR for Mac
- CVE-2019-3644 MWG scanners updated to address CVE-2019-9517
- CVE-2020-7326 McAfee MAR - Improperly implemented security check
Sources
Also known as GHSA-jjmf-77v6-6356.