GHSA-9856-9gg9-qcmq

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Source
https://github.com/advisories/GHSA-9856-9gg9-qcmq
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-9856-9gg9-qcmq/GHSA-9856-9gg9-qcmq.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-9856-9gg9-qcmq
Aliases
Published
2021-08-30T16:15:41Z
Modified
2025-01-30T14:37:30Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Ethereum Contains Consensus Flaw During Block Processing
Details

Impact

A vulnerability in the Geth EVM could cause a node to reject the canonical chain.

Description

A memory-corruption bug within the EVM can cause a consensus error, where vulnerable nodes obtain a different stateRoot when processing a maliciously crafted transaction. This, in turn, would lead to the chain being split in two forks.

All Geth versions supporting the London hard fork are vulnerable (which predates London), so all users should update.

This bug was exploited on Mainnet at block 13107518, leading to a minority chain split.

Patches

A patch is included in the v1.10.8 release. The exact patch to fix the issue is contained within this commit

Workarounds

No workarounds exist, save to update and/or apply the patch commit.

References.

Post-mortem write-up.

Credits

The bug was found by @guidovranken (working for Sentnl during an audit of the Telos EVM) and reported via bounty@ethereum.org.

For more information

If you have any questions or comments about this advisory:

Database specific 
{
    "nvd_published_at": "2021-08-24T16:15:00Z",
    "cwe_ids": [
        "CWE-436"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-26T15:08:22Z"
}
References

Affected packages

Go / github.com/ethereum/go-ethereum

Package

Name
github.com/ethereum/go-ethereum
View open source insights on deps.dev
Purl
pkg:golang/github.com/ethereum/go-ethereum

Affected ranges

Type
SEMVER
Events
Introduced
1.10.0
Fixed
1.10.8