CVE-2021-44543 Cross-site scripting in privoxy
An XSS vulnerability in Privoxy allows attackers to execute scripts when the user-manual is served, requiring specific configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-44543?
CVE-2021-44543 is a medium-severity cross-site scripting vulnerability in privoxy, published on 23 Dec 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An XSS vulnerability was found in Privoxy which was fixed in cgi_error_no_template() by encode the template name when Privoxy is configured to servce the user-manual itself.
Weakness: CWE-79
Which versions are affected by CVE-2021-44543?
It affects 1 product.
Products include Privoxy Privoxy.
How do I fix CVE-2021-44543?
Apply the vendor's patch.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-44543 being exploited?
There is no known exploitation of CVE-2021-44543 in the wild and no public exploit code.
Other vulnerabilities in privoxy
Sources
Also known as ALPINE-CVE-2021-44543, DEBIAN-CVE-2021-44543, GHSA-hf3j-m5fx-q82c, UBUNTU-CVE-2021-44543.