CVE-2021-27465 Cross-site scripting in Emerson Rosemount X-STREAM Gas Analyzer

Medium 6.1 Published 20 May 2021 Updated 3 Aug 2024

Attackers can inject arbitrary HTML into the Emerson Rosemount X-STREAM Gas Analyzer web interface to modify displayed data.

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-2021-27465?

CVE-2021-27465 is a medium-severity cross-site scripting vulnerability in Emerson Rosemount X-STREAM Gas Analyzer, published on 20 May 2021. 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 vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The affected applications do not validate webpage input, which could allow an attacker to inject arbitrary HTML code into a webpage. This would allow an attacker to modify the page and display incorrect or undesirable data.

Weakness: CWE-79

Which versions are affected by CVE-2021-27465?

It affects 4 products.

Products include Emerson X-Stream Enhanced Xefd Firmware, Emerson X-Stream Enhanced Xegk Firmware, Emerson X-Stream Enhanced Xegp Firmware, Emerson X-Stream Enhanced Xexf Firmware.

How do I fix CVE-2021-27465?

No fix has been published for CVE-2021-27465 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-2021-27465 being exploited?

There is no known exploitation of CVE-2021-27465 in the wild and no public exploit code.

Sources

Also known as GHSA-p79w-2wmm-m2hq.