CVE-2021-33184 Server-side request forgery in Synology Download Station

High 7.7 Published 1 Jun 2021 Updated 17 Sep 2024

Remote authenticated users can exploit an SSRF vulnerability in Synology Download Station to read arbitrary files on the server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-33184?

CVE-2021-33184 is a high-severity server-side request forgery vulnerability in Synology Download Station, published on 1 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Server-Side request forgery (SSRF) vulnerability in task management component in Synology Download Station before 3.8.15-3563 allows remote authenticated users to read arbitrary files via unspecified vectors.

Weakness: CWE-918

Which versions are affected by CVE-2021-33184?

It affects 1 product.

Products include Synology Download Station.

How do I fix CVE-2021-33184?

No fix has been published for CVE-2021-33184 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2021-33184 being exploited?

There is no known exploitation of CVE-2021-33184 in the wild and no public exploit code.

Sources

Also known as GHSA-xqrp-5pxm-3qxh.