CVE-2018-12018 Go Ethereum LES protocol implementation vulnerable to Denial of Service

What is CVE-2018-12018?

CVE-2018-12018 is a high-severity vulnerability in n/a, published on 5 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The GetBlockHeadersMsg handler in the LES protocol implementation in Go Ethereum (aka geth) before 1.8.11 may lead to an access violation because of an integer signedness error for the array index, which allows attackers to launch a Denial of Service attack by sending a packet with a -1 query.Skip value. The vulnerable remote node would be crashed by such an attack immediately, aka the EPoD (Ethereum Packet of Death) issue.

Weakness: CWE-129

Which versions are affected by CVE-2018-12018?

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

Products include Ethereum Go Ethereum.

How do I fix CVE-2018-12018?

Upgrade github.com/ethereum/go-ethereum to 1.8.11 or later.

Is CVE-2018-12018 being exploited?

There is no known exploitation of CVE-2018-12018 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in n/a

• CVE-2026-26314 Go Ethereum affected by DoS via malicious p2p message High 8.7
• CVE-2023-42319 go-ethereum vulnerable to denial of service via crafted GraphQL query High 7.5
• CVE-2023-40591 Denial of service via malicious p2p message in go-ethereum High 7.5
• CVE-2021-42219 Denial of service in go-ethereum High 7.5
• CVE-2022-23327 Denial of Service in Go-Ethereum High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p5gc-957x-gfw9, GO-2021-0075.