CVE-2017-15886 Server-side request forgery in Chat

Medium 6.5 Published 28 Dec 2017 Updated 16 Sep 2024

Authenticated attackers can exploit SSRF in Synology Chat to download arbitrary local files via crafted URIs.

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-2017-15886?

CVE-2017-15886 is a medium-severity server-side request forgery vulnerability in Synology Chat, published on 28 Dec 2017. 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 Link Preview in Synology Chat before 2.0.0-1124 allows remote authenticated users to download arbitrary local files via a crafted URI.

Weakness: CWE-918

Which versions are affected by CVE-2017-15886?

It affects 1 product.

Products include Synology Chat.

How do I fix CVE-2017-15886?

No fix has been published for CVE-2017-15886 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-2017-15886 being exploited?

There is no known exploitation of CVE-2017-15886 in the wild and no public exploit code.

Sources

Also known as GHSA-p6m5-7r2m-h3px.