GHSA-9856-9gg9-qcmq

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

2023-11-01T04:56:02.547495Z

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:

Open an issue in go-ethereum
Email us at security@ethereum.org

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