CVE-2018-20421
Last modified
CVE-2018-20421 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.46% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ethereum | Go Ethereum | 1.8.19 |
References
- https://github.com/ethereum/go-ethereum/issues/18289Exploit, Third Party Advisory
- https://github.com/ethereum/go-ethereum/issues/18289Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
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