Description
Go Ethereum (aka geth) 1.8.19 allows attackers to cause a denial of service (memory consumption) by rewriting the length of a dynamic array in memory, and then writing data to a single memory location with a large index number, as demonstrated by use of "assembly { mstore }" followed by a "c[0xC800000] = 0xFF" assignment.
Published: 2018-12-24
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2018-12978 Go Ethereum (aka geth) 1.8.19 allows attackers to cause a denial of service (memory consumption) by rewriting the length of a dynamic array in memory, and then writing data to a single memory location with a large index number, as demonstrated by use of "assembly { mstore }" followed by a "c[0xC800000] = 0xFF" assignment.
History

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Subscriptions

Ethereum Go Ethereum
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-09-17T01:41:26.479Z

Reserved: 2018-12-23T00:00:00.000Z

Link: CVE-2018-20421

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-12-24T03:29:00.353

Modified: 2024-11-21T04:01:26.680

Link: CVE-2018-20421

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses