CVE-2021-20209 Denial of service in privoxy
A memory leak in Privoxy's status handler can lead to resource exhaustion and denial of service when action files are not configured.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-20209?
CVE-2021-20209 is a high-severity denial of service vulnerability in privoxy, published on 25 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A memory leak vulnerability was found in Privoxy before 3.0.29 in the show-status CGI handler when no action files are configured.
Weakness: CWE-401
Which versions are affected by CVE-2021-20209?
It affects 1 product.
Products include Privoxy Privoxy.
How do I fix CVE-2021-20209?
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-2021-20209 being exploited?
There is no known exploitation of CVE-2021-20209 in the wild and no public exploit code.
Other vulnerabilities in privoxy
Sources
Also known as DEBIAN-CVE-2021-20209, GHSA-qf5g-m559-vx7x, UBUNTU-CVE-2021-20209.