CVE-2022-41719 Panic in github.com/shamaton/msgpack/v2
An attacker can cause a denial of service by sending crafted inputs to the msgpack unmarshal function in the Go library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-41719?
CVE-2022-41719 is a high-severity denial of service vulnerability in github.com/shamaton/msgpack/v2, published on 10 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unmarshal can panic on some inputs, possibly allowing for denial of service attacks.
Which versions are affected by CVE-2022-41719?
3 open source packages ship an affected version, including github.com/shamaton/msgpack/v2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/shamaton/msgpack/v2 Go | All versions | 2.1.1 |
github.com/shamaton/msgpack/v2 Go | All versions | 2.1.1 |
github.com/shamaton/msgpack/v2 Go | All versions | 2.1.1 |
Products include Messagepack Project Messagepack.
How do I fix CVE-2022-41719?
Upgrade github.com/shamaton/msgpack/v2 to 2.1.1 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-2022-41719 being exploited?
There is no known exploitation of CVE-2022-41719 in the wild and no public exploit code.
Sources
Also known as GHSA-jr77-8gx4-h5qh, GO-2022-0972.