CVE-2021-34809 Command injection in Download Station

Critical 9.9 Published 18 Jun 2021 Updated 16 Sep 2024

Remote authenticated users can execute arbitrary code via command injection in Synology Download Station task management.

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-2021-34809?

CVE-2021-34809 is a critical command injection vulnerability in Synology Download Station, published on 18 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper neutralization of special elements used in a command ('Command Injection') vulnerability in task management component in Synology Download Station before 3.8.16-3566 allows remote authenticated users to execute arbitrary code via unspecified vectors.

Weakness: CWE-77

Which versions are affected by CVE-2021-34809?

It affects 1 product.

Products include Synology Download Station.

How do I fix CVE-2021-34809?

No fix has been published for CVE-2021-34809 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-34809 being exploited?

There is no known exploitation of CVE-2021-34809 in the wild and no public exploit code.

Sources

Also known as GHSA-46j9-2j4r-83q6.