CVE-2019-16914 Cross-site scripting in n/a

Medium 6.1 Published Updated

Cross-site scripting in pfSense captive portal allows attackers to inject scripts via unsanitized parameters, potentially leading to session hijacking or code execution.

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-2019-16914?

CVE-2019-16914 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 Sep 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

An XSS issue was discovered in pfSense through 2.4.4-p3. In services_captiveportal_mac.php, the username and delmac parameters are displayed without sanitization.

Weakness: CWE-79

Which versions are affected by CVE-2019-16914?

It affects 1 product.

Products include Netgate Pfsense.

How do I fix CVE-2019-16914?

No fix has been published for CVE-2019-16914 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-2019-16914 being exploited?

There is no known exploitation of CVE-2019-16914 in the wild and no public exploit code.

Sources

Also known as GHSA-97j6-v4p3-8f67.

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