CVE-2018-20421
High
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.
SeverityHigh
CVSS7.5
Exploit probability74. percentile1.5%
ProductGo Ethereum
PublishedDec 24, 2018
First seenDec 24, 2018
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ethereum go_ethereum | 1.8.19 | — |
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