CVE-2019-12949 Cross-site scripting in n/a
An attacker can execute arbitrary commands with root privileges by tricking an administrator into triggering a stored XSS vulnerability in the web interface.
- 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
- None listed
What is CVE-2019-12949?
CVE-2019-12949 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Jun 2019. 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
In pfSense 2.4.4-p2 and 2.4.4-p3, if it is possible to trick an authenticated administrator into clicking on a button on a phishing page, an attacker can leverage XSS to upload arbitrary executable code, via diag_command.php and rrd_fetch_json.php (timePeriod parameter), to a server. Then, the remote attacker can run any command with root privileges on that server.
Weakness: CWE-79
Which versions are affected by CVE-2019-12949?
It affects 1 product.
Products include Netgate Pfsense.
How do I fix CVE-2019-12949?
No fix has been published for CVE-2019-12949 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-2019-12949 being exploited?
There is no known exploitation of CVE-2019-12949 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4v72-6p9w-2mww.