CVE-2022-29177 DoS via malicious p2p message in Go-Ethereum

Medium 5.9 Published Updated

An attacker can crash a Go-Ethereum node by sending malicious p2p messages if high verbosity logging is enabled.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2022-29177?

CVE-2022-29177 is a medium-severity denial of service vulnerability in go-ethereum, published on 20 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Go Ethereum is the official Golang implementation of the Ethereum protocol. Prior to version 1.10.17, a vulnerable node, if configured to use high verbosity logging, can be made to crash when handling specially crafted p2p messages sent from an attacker node. Version 1.10.17 contains a patch that addresses the problem. As a workaround, setting loglevel to default level (`INFO`) makes the node not vulnerable to this attack.

Weakness: CWE-400

Which versions are affected by CVE-2022-29177?

3 open source packages ship an affected version, including github.com/ethereum/go-ethereum. It affects 1 product.

PackageAffectedFixed in
github.com/ethereum/go-ethereum GoAll versions1.10.17
github.com/ethereum/go-ethereum GoAll versions1.10.17
github.com/ethereum/go-ethereum GoAll versions1.10.17

Products include Ethereum Go Ethereum.

How do I fix CVE-2022-29177?

Upgrade github.com/ethereum/go-ethereum to 1.10.17 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-2022-29177 being exploited?

There is no known exploitation of CVE-2022-29177 in the wild and no public exploit code.

Sources

Also known as GHSA-wjxw-gh3m-7pm5, GO-2022-0456.

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