CVE-2020-26241

Katalog CVE

CVSS 7.1 · High EPSS 1,2%

Kerentanan Incorrect Calculation pada go ethereum. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth's pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.

Rincian

Terbit di NVD

25 November 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-682: Incorrect Calculation

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 68,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://blog.ethereum.org/2020/11/12/geth_security_release/ advisory vendor
• https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf advisory pihak ketiga