CVE-2020-26265 — Incorrect Calculation in Ethereum Go-ethereum

CWE-682 — Incorrect Calculation6 documents5 sources
Severity
5.3MEDIUMNVD
EPSS
0.3%
top 49.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Github.com Ethereum Go-ethereumEthereum GO EthereumEthereum Go-ethereum
Timeline
PublishedDec 11
Latest updateFeb 21

Description

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:NExploitability: 1.6 | Impact: 3.6

Affected Packages3 packages

▶NVDethereum/go_ethereum1.9.4 — 1.9.20
▶Gogithub.com/ethereum_go-ethereum1.9.4 — 1.9.20
▶CVEListV5ethereum/go-ethereum>= 1.9.4, < 1.9.20

🔴Vulnerability Details

4
OSV
Consensus flaw in github.com/ethereum/go-ethereum↗2021-07-28
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GHSA
Consensus flaw during block processing in github.com/ethereum/go-ethereum↗2021-06-29
▶
OSV
Consensus flaw during block processing in github.com/ethereum/go-ethereum↗2021-06-29
▶
CVEList
Consensus flaw during block processing↗2020-12-11
▶

📄Research Papers

1
arXiv
BlockScope: Detecting and Investigating Propagated Vulnerabilities in Forked Blockchain Projects↗2023-02-21
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CVE-2020-26265 — Incorrect Calculation | cvebase