CVE-2021-20210 Denial of service in privoxy
A memory leak in Privoxy's status handler when no filters are configured can cause a system crash, requiring an upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-20210?
CVE-2021-20210 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 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.
Weakness: CWE-401
Which versions are affected by CVE-2021-20210?
It affects 1 product.
Products include Privoxy Privoxy.
How do I fix CVE-2021-20210?
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-2021-20210 being exploited?
There is no known exploitation of CVE-2021-20210 in the wild and no public exploit code.
Other vulnerabilities in privoxy
Sources
Also known as ALPINE-CVE-2021-20210, DEBIAN-CVE-2021-20210, GHSA-j4jv-9rjv-h6jm, UBUNTU-CVE-2021-20210.