CVE-2018-20421

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Summary

CVECVE-2018-20421
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-12-24 03:29:00 UTC
Updated2019-10-03 00:03:00 UTC
DescriptionGo 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.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ethereum Go Ethereum 1.8.19 All All All
Application Ethereum Go Ethereum 1.8.19 All All All

References

ReferenceSourceLinkTags
EVM dynamic array maybe occupy large memory · Issue #18289 · ethereum/go-ethereum · GitHub MISC github.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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