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

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-12-24T03:00:00Z

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

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

Link: CVE-2018-20421

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

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

Modified: 2019-10-03T00:03:26.223

Link: CVE-2018-20421

cve-icon Redhat

No data.