CVE-2021-20671 File upload in GROWI

High 7.2 Published 10 Mar 2021 Updated 3 Aug 2024

Administrative users can exploit invalid file validation to overwrite server files, potentially leading to arbitrary code execution.

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

What is CVE-2021-20671?

CVE-2021-20671 is a high-severity vulnerability in WESEEK, Inc. GROWI, published on 10 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.

Weakness: CWE-20

Which versions are affected by CVE-2021-20671?

It affects 1 product.

Products include Weseek Growi.

How do I fix CVE-2021-20671?

No fix has been published for CVE-2021-20671 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-20671 being exploited?

There is no known exploitation of CVE-2021-20671 in the wild and no public exploit code.

Sources

Also known as GHSA-84w3-v2m2-fj4m.