CVE-2020-3946 Denial of service in InstallBuilder
Attackers can cause denial of service in InstallBuilder AutoUpdate tools via a Billion laughs attack when update checks are enabled.
- 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-2020-3946?
CVE-2020-3946 is a high-severity denial of service vulnerability in VMware InstallBuilder, published on 20 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
InstallBuilder AutoUpdate tool and regular installers enabling <checkForUpdates> built with versions earlier than 19.11 are vulnerable to Billion laughs attack (denial-of-service).
Weakness: CWE-776
Which versions are affected by CVE-2020-3946?
It affects 1 product.
Products include Vmware Installbuilder.
How do I fix CVE-2020-3946?
No fix has been published for CVE-2020-3946 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-2020-3946 being exploited?
There is no known exploitation of CVE-2020-3946 in the wild and no public exploit code.
Other vulnerabilities in VMware InstallBuilder
Sources
Also known as GHSA-x6rx-7hmf-r792.