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cve/2018/CVE-2018-20421.md
0xMarcio 49bdc782b3 Update Sun May 26 14:27:04 CEST 2024
2024-05-26 14:27:05 +02:00

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CVE-2018-20421

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.

POC

Reference

No PoCs from references.

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