PT-2021-7369 · Unknown · Go-Ethereum

Guidovranken · Published 2021-08-24 · Updated 2024-12-13 · CVE-2021-39137

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions go-ethereum versions prior to v1.10.8

Description A consensus-vulnerability in go-ethereum (Geth) could cause a chain split, where vulnerable versions refuse to accept the canonical chain. This issue is related to a memory-corruption bug within the EVM, which can cause a consensus error when processing a maliciously crafted transaction, leading to the chain being split in two forks. The vulnerability was exploited on Mainnet, resulting in a minority chain split. Approximately 50% of nodes were taken down due to this bug.

Recommendations For versions prior to v1.10.8, update to the v1.10.8 release, which includes a patch for the issue. No workarounds exist, save to update and/or apply the patch commit. As a temporary workaround, consider restricting the use of the vulnerable EVM until a patch is available.

Fix

Weakness Enumeration

CWE-436

Related Identifiers

BDU:2022-05814

CVE-2021-39137

GHSA-9856-9GG9-QCMQ

GO-2022-0254

Affected Products

Go-Ethereum

References · 16

• https://osv.dev/vulnerability/CVE-2021-39137 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2022-0254 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9856-9gg9-qcmq · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39137 · Security Note
• https://bdu.fstec.ru/vul/2022-05814 · Security Note
• https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq · Note
• https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8 · Note
• https://github.com/ethereum/go-ethereum · Note
• https://github.com/ethereum/go-ethereum/pull/23381/commits/4d4879cafd1b3c906fc184a8c4a357137465128f · Note
• https://t.me/rnetsec/16425 · Telegram Post
• https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMETHEREUMGOETHEREUMCORE-1569482 · Note
• https://t.me/cibsecurity/27783 · Telegram Post
• https://twitter.com/explain_briefly/status/1867614140920918278 · Twitter Post
• https://pkg.go.dev/vuln/GO-2022-0254 · Note
• https://t.me/cybersecuritytechnologies/4203 · Telegram Post