CVE-2023-3840 NxFilter cross site scripting

Low 3.5 Published 23 Jul 2023 Updated 15 Oct 2024

Remote attackers can execute arbitrary scripts via the user parameter in NxFilter's daily report page, potentially compromising user 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-2023-3840?

CVE-2023-3840 is a low-severity cross-site scripting vulnerability in NxFilter, published on 23 Jul 2023. 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 vulnerability, which was classified as problematic, was found in NxFilter 4.3.2.5. This affects an unknown part of the file /report,daily.jsp?stime=2023%2F07%2F12&timeOption=yesterday&. The manipulation of the argument user leads to cross site scripting. It is possible to initiate the attack remotely. The associated identifier of this vulnerability is VDB-235191. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-79

Which versions are affected by CVE-2023-3840?

It affects 1 product.

Products include Nxfilter Nxfilter.

How do I fix CVE-2023-3840?

No fix has been published for CVE-2023-3840 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-2023-3840 being exploited?

There is no known exploitation of CVE-2023-3840 in the wild and no public exploit code.

Sources

Also known as GHSA-qcj2-p364-vrrf.