CVE-2020-21359 File upload in n/a

Critical 9.8 Published 11 Aug 2021 Updated 4 Aug 2024

Attackers can upload malicious files to Maccms10 by bypassing suffix checks, leading to arbitrary code execution on the server.

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-2020-21359?

CVE-2020-21359 is a critical vulnerability in n/a, published on 11 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.

Weakness: CWE-434

Which versions are affected by CVE-2020-21359?

It affects 1 product.

Products include Maccms Maccms.

How do I fix CVE-2020-21359?

No fix has been published for CVE-2020-21359 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-21359 being exploited?

There is no known exploitation of CVE-2020-21359 in the wild and no public exploit code.

Sources

Also known as GHSA-r72h-j3wg-jrp4.