🛡️ CVE-2018-12018 — go-ethereum

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-129 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Go Ethereum LES protocol implementation vulnerable to Denial of Service

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.

Specific Go Packages Affected

github.com/ethereum/go-ethereum/les

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2018-12018 is classified as CWE-129: Improper Validation of Array Index. An index derived from input is used without a range check, so the access lands outside the array.

Affected software

CVE-2018-12018 is recorded against 1 package.

  • github.com/ethereum/go-ethereum

Timeline and source

Published on 14 May 2022 and last revised on 20 May 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
peckshield.com (Web)
pkg.go.dev (Web)
web.archive.org (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-129
Public Exploit ✅ No
Source OSV
Published 2022-05-14
Updated 2026-08-12
Modified 2024-05-20
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/ethereum/go-ethereum — —

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