CVE-2020-26265 Consensus flaw during block processing

2020-12-1116:45:15

CWE-682

GitHub_M

www.cve.org

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

5.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.5%

JSON

Go Ethereum, or “Geth”, is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made – all users are recommended to upgrade to a newer version.

CNA Affected

[
  {
    "product": "go-ethereum",
    "vendor": "ethereum",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.9.4, < 1.9.20"
      }
    ]
  }
]