CVE-2021-42219 Denial of service in go-ethereum
Attackers can cause denial of service in Go-Ethereum nodes by sending excessive messages due to missing memory handling in the ethash algorithm.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42219?
CVE-2021-42219 is a high-severity denial of service vulnerability in n/a, published on 16 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Go-Ethereum v1.10.9 was discovered to contain an issue which allows attackers to cause a denial of service (DoS) via sending an excessive amount of messages to a node. This is caused by missing memory in the component /ethash/algorithm.go.
Which versions are affected by CVE-2021-42219?
2 open source packages ship an affected version, including github.com/ethereum/go-ethereum. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/ethereum/go-ethereum Go | All versions to 1.10.9 | None |
github.com/ethereum/go-ethereum Go | All versions to 1.10.9 | None |
Products include Ethereum Go Ethereum.
How do I fix CVE-2021-42219?
No fix has been published for CVE-2021-42219 yet. Limit exposure of the affected software until one is available.
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-2021-42219 being exploited?
There is no known exploitation of CVE-2021-42219 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2026-26314 Go Ethereum affected by DoS via malicious p2p message
- CVE-2023-42319 go-ethereum vulnerable to denial of service via crafted GraphQL query
- CVE-2023-40591 Denial of service via malicious p2p message in go-ethereum
- CVE-2022-23327 Denial of Service in Go-Ethereum
- CVE-2022-23328 Denial of Service in Go-Ethereum
Sources
Also known as GHSA-vrcc-g6vj-mh5w.