CVE-2019-6853 Cross-site scripting in Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702

Medium 6.1 Published 20 Nov 2019 Updated 4 Aug 2024

Cross-site scripting vulnerability in Andover Continuum web server allows attackers to execute arbitrary scripts in user browsers.

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-2019-6853?

CVE-2019-6853 is a medium-severity cross-site scripting vulnerability in Schneider Electric Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702, published on 20 Nov 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

A CWE-79: Failure to Preserve Web Page Structure vulnerability exists in Andover Continuum (models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702) , which could enable a successful Cross-site Scripting (XSS attack) when using the products web server.

Weakness: CWE-79

Which versions are affected by CVE-2019-6853?

It affects 11 products.

Products include Schneider-Electric Andover Continuum 5720 Firmware, Schneider-Electric Andover Continuum 5740 Firmware, Schneider-Electric Andover Continuum 9200 Firmware, Schneider-Electric Andover Continuum 9680 Firmware, Schneider-Electric Andover Continuum 9702 Firmware, Schneider-Electric Andover Continuum 9900 Firmware and 5 more.

How do I fix CVE-2019-6853?

No fix has been published for CVE-2019-6853 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-2019-6853 being exploited?

There is no known exploitation of CVE-2019-6853 in the wild and no public exploit code.

Sources

Also known as GHSA-pc4q-2v2h-h23c.