CVE-2021-20216 Denial of service in privoxy
A memory leak in Privoxy during failed decompression allows attackers to cause a denial of service by exhausting system resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-20216?
CVE-2021-20216 is a high-severity denial of service vulnerability in privoxy, published on 25 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in Privoxy in versions before 3.0.31. A memory leak that occurs when decompression fails unexpectedly may lead to a denial of service. The highest threat from this vulnerability is to system availability.
Which versions are affected by CVE-2021-20216?
It affects 1 product.
Products include Privoxy Privoxy.
How do I fix CVE-2021-20216?
Upgrade to a fixed version.
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-2021-20216 being exploited?
There is no known exploitation of CVE-2021-20216 in the wild and no public exploit code.
Other vulnerabilities in privoxy
Sources
Also known as ALPINE-CVE-2021-20216, DEBIAN-CVE-2021-20216, GHSA-3429-2hmm-5vvx, UBUNTU-CVE-2021-20216.