GHSA-9gp7-6833-wv89 etcd having a negative value for cluster node size results in an index out-of-bound panic during service discovery
An attacker can cause a denial of service in etcd by providing a negative cluster size during service discovery, leading to a panic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-9gp7-6833-wv89?
GHSA-9gp7-6833-wv89 is a denial of service vulnerability in go.etcd.io/etcd/client/v3, published on 6 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability type
Data Validation
Detail
When an etcd instance attempts to perform service discovery, if a cluster size is provided as a negative value, the etcd instance will panic without recovery.
References
Find out more on this vulnerability in the security audit report
For more information
If you have any questions or comments about this advisory:
- Contact the etcd security committee
Which versions are affected by GHSA-9gp7-6833-wv89?
4 open source packages ship an affected version, including go.etcd.io/etcd/client/v3.
| Package | Affected | Fixed in |
|---|---|---|
go.etcd.io/etcd/client/v3 Go | All versions | 3.3.23 |
go.etcd.io/etcd/client/v3 Go | All versions | 3.3.23 |
go.etcd.io/etcd/client/v3 Go | From 3.4.0 | 3.4.10 |
go.etcd.io/etcd/client/v3 Go | From 3.4.0 | 3.4.10 |
How do I fix GHSA-9gp7-6833-wv89?
Upgrade go.etcd.io/etcd/client/v3 to a fixed version for your release line: 3.3.23 or 3.4.10.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-9gp7-6833-wv89 being exploited?
There is no known exploitation of GHSA-9gp7-6833-wv89 in the wild and no public exploit code.