Vulnerability Details CVE-2018-20421
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.7%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2018-20421
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cpe:2.3:a:ethereum:go_ethereum:1.8.19