CVE-2021-4257 ctrlo lenio Task task.tt cross site scripting

Low 3.5 Published 18 Dec 2022 Updated 3 Aug 2024

Remote attackers can inject malicious scripts via task fields in the lenio application, potentially executing code in user sessions.

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-2021-4257?

CVE-2021-4257 is a low-severity cross-site scripting vulnerability in ctrlo lenio, published on 18 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability was found in ctrlo lenio. It has been declared as problematic. This vulnerability affects unknown code of the file views/task.tt of the component Task Handler. The manipulation of the argument site.org.name/check.name/task.tasktype.name/task.name leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 698c5fa465169d6f23c6a41ca4b1fc9a7869013a. It is recommended to apply a patch to fix this issue. VDB-216214 is the identifier assigned to this vulnerability.

Weakness: CWE-79, CWE-707

Which versions are affected by CVE-2021-4257?

It affects 1 product.

Products include Ctrlo Lenio.

How do I fix CVE-2021-4257?

No fix has been published for CVE-2021-4257 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-2021-4257 being exploited?

There is no known exploitation of CVE-2021-4257 in the wild and no public exploit code.

Sources

Also known as GHSA-7m75-8m3p-hxvm.