CVE-2022-21667 Denial of Service in soketi
An unhandled case when reading POST requests with empty bodies causes the soketi WebSockets server to crash, allowing unauthenticated attackers to cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-21667?
CVE-2022-21667 is a high-severity denial of service vulnerability in soketi, published on 7 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
soketi is an open-source WebSockets server. There is an unhandled case when reading POST requests which results in the server crashing if it could not read the body of a request. In the event that a POST request is sent to any endpoint of the server with an empty body, even unauthenticated with the Pusher Protocol, it will crash the server. All users that run the server are affected by this vulnerability and it's highly recommended to upgrade to the latest patch. There are no workarounds for this issue.
Weakness: CWE-755
Which versions are affected by CVE-2022-21667?
2 open source packages ship an affected version, including @soketi/soketi. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@soketi/soketi npm | All versions | 0.24.1 |
@soketi/soketi npm | All versions | 0.24.1 |
Products include Soketi Project Soketi.
How do I fix CVE-2022-21667?
Upgrade @soketi/soketi to 0.24.1 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-21667 being exploited?
There is no known exploitation of CVE-2022-21667 in the wild and no public exploit code.
Sources
Also known as GHSA-86ch-6w7v-v6xf.