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CVE-2020-26240: Incorrect Calculation

November 25, 2020 (updated December 3, 2020)

Go Ethereum, or “Geth”, is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth could cause miners to erroneously calculate PoW in an upcoming epoch. This happened on the ETC chain on . This issue is relevant only for miners, non-mining nodes are unaffected.

References

  • blog.ethereum.org/2020/11/12/geth_security_release/
  • nvd.nist.gov/vuln/detail/CVE-2020-26240

Code Behaviors & Features

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Affected versions

All versions before 1.9.24

Fixed versions

  • v1.9.24

Solution

Upgrade to version 1.9.24 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-682: Incorrect Calculation

Source file

go/github.com/ethereum/go-ethereum/eth/CVE-2020-26240.yml

Spotted a mistake? Edit the file on GitLab.

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