CVE-2020-19201 Cross-site scripting in n/a
Stored XSS in pfSense WebGUI allows attackers to execute scripts via NAT rule descriptions, potentially compromising admin sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-19201?
CVE-2020-19201 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
Weakness: CWE-79
Which versions are affected by CVE-2020-19201?
It affects 1 product.
Products include Netgate Pfsense.
How do I fix CVE-2020-19201?
No fix has been published for CVE-2020-19201 yet. Limit exposure of the affected software until one is available.
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-2020-19201 being exploited?
There is no known exploitation of CVE-2020-19201 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-5rh9-j8fm-2vv4.