CVE-2020-27254 Auth bypass in Emerson Rosemount X-STREAM Gas Analyzer

High 7.5 Published 21 Dec 2020 Updated 4 Aug 2024

An attacker can access sensitive log and backup data via a crafted URL due to improper authentication in Emerson Rosemount X-STREAM Gas Analyzers.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-27254?

CVE-2020-27254 is a high-severity authentication bypass vulnerability in Emerson Rosemount X-STREAM Gas Analyzer, published on 21 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Emerson Rosemount X-STREAM Gas AnalyzerX-STREAM enhanced XEGP, XEGK, XEFD, XEXF – all revisions, The affected products are vulnerable to improper authentication for accessing log and backup data, which could allow an attacker with a specially crafted URL to obtain access to sensitive information.

Weakness: CWE-287

Which versions are affected by CVE-2020-27254?

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-2020-27254?

No fix has been published for CVE-2020-27254 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-27254 being exploited?

There is no known exploitation of CVE-2020-27254 in the wild and no public exploit code.

Sources

Also known as GHSA-3qjx-hh6f-4fvq.