CVE-2019-3923 Cross-site scripting in Tenable Nessus
An authenticated attacker can inject malicious scripts into Nessus, leading to arbitrary code execution in victim browsers.
- 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-2019-3923?
CVE-2019-3923 is a medium-severity cross-site scripting vulnerability in Tenable Nessus, published on 12 Feb 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Nessus versions 8.2.1 and earlier were found to contain a stored XSS vulnerability due to improper validation of user-supplied input. An authenticated, remote attacker could potentially exploit this vulnerability via a specially crafted request to execute arbitrary script code in a user's browser session. Tenable has released Nessus 8.2.2 to address this issue.
Weakness: CWE-79
Which versions are affected by CVE-2019-3923?
It affects 1 product.
Products include Tenable Nessus.
How do I fix CVE-2019-3923?
No fix has been published for CVE-2019-3923 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-2019-3923 being exploited?
There is no known exploitation of CVE-2019-3923 in the wild and no public exploit code.
Other vulnerabilities in Tenable Nessus
Sources
Also known as GHSA-x9wg-fm6f-f8w7.