CVE-2021-42117 UI Redressing in TopEase

Q: Is CVE-2021-42117 being exploited?

There is no known exploitation of CVE-2021-42117 in the wild and no public exploit code.

Q: How do I fix CVE-2021-42117?

No fix has been published for CVE-2021-42117 yet. Limit exposure of the affected software until one is available.

Low 3.5 Published 30 Nov 2021 Updated 4 Aug 2024

An authenticated attacker can inject arbitrary HTML into the TopEase platform, enabling UI redressing attacks against other users.

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-2021-42117?

CVE-2021-42117 is a low-severity cross-site scripting vulnerability in Business-DNA Solutions GmbH TopEase, published on 30 Nov 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an authenticated remote attacker with Object Modification privileges to insert arbitrary HTML without code execution.

Weakness: CWE-79, CWE-20

Which versions are affected by CVE-2021-42117?

It affects 1 product.

Products include Businessdnasolutions Topease.

How do I fix CVE-2021-42117?

No fix has been published for CVE-2021-42117 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-2021-42117 being exploited?

There is no known exploitation of CVE-2021-42117 in the wild and no public exploit code.

Sources

Also known as GHSA-g32j-w768-4w3j.