CVE-2021-42123 Missing Upload Filter in TopEase

Q: Is CVE-2021-42123 being exploited?

There is no known exploitation of CVE-2021-42123 in the wild and no public exploit code.

Q: How do I fix CVE-2021-42123?

No fix has been published for CVE-2021-42123 yet. Limit exposure of the affected software until one is available.

High 7.3 Published 30 Nov 2021 Updated 4 Aug 2024

Authenticated attackers can upload arbitrary file types due to missing filters, potentially enabling client-side attacks or code execution.

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-2021-42123?

CVE-2021-42123 is a high-severity 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

Unrestricted File Upload in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 in the File Upload Functions allows an authenticated remote attacker with Upload privileges to upload files with any file type, enabling client-side attacks.

Weakness: CWE-434

Which versions are affected by CVE-2021-42123?

It affects 1 product.

Products include Businessdnasolutions Topease.

How do I fix CVE-2021-42123?

No fix has been published for CVE-2021-42123 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-42123 being exploited?

There is no known exploitation of CVE-2021-42123 in the wild and no public exploit code.

Sources

Also known as GHSA-2fvx-vhr6-r4cv.