CVE-2022-25891 Denial of Service (DoS)
An attacker can cause a denial of service in the shoutrrr Go library by sending messages of specific lengths to the PartitionMessage function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-25891?
CVE-2022-25891 is a high-severity denial of service vulnerability in github.com/containrrr/shoutrrr/pkg/util, published on 15 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The package github.com/containrrr/shoutrrr/pkg/util before 0.6.0 are vulnerable to Denial of Service (DoS) via the util.PartitionMessage function. Exploiting this vulnerability is possible by sending exactly 2000, 4000, or 6000 characters messages.
Which versions are affected by CVE-2022-25891?
3 open source packages ship an affected version, including github.com/containrrr/shoutrrr. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/containrrr/shoutrrr Go | All versions | 0.6.0 |
github.com/containrrr/shoutrrr Go | All versions | 0.6.0 |
github.com/containrrr/shoutrrr Go | All versions | 0.6.0 |
Products include Containrrr Shoutrrr.
How do I fix CVE-2022-25891?
Upgrade github.com/containrrr/shoutrrr to 0.6.0 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-2022-25891 being exploited?
There is no known exploitation of CVE-2022-25891 in the wild and no public exploit code.
Sources
Also known as AZL-31969, GHSA-477v-w82m-634j, GO-2022-0528, SNYK-GOLANG-GITHUBCOMCONTAINRRRSHOUTRRRPKGUTIL-2849059.