Vulnerability · Published Dec 11, 2020 · Assigned by GitHub_M
CVE-2020-26265Consensus flaw during block processing
Medium 5.3
In plain English
A medium-severity security flaw in go-ethereum from ethereum. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/ethereum/go-ethereum | 1.9.20 | GHSA-xw37-57qp-9mm4 |
| Go | github.com/ethereum/go-ethereum | 1.9.20 | GO-2021-0105 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ethereum | go-ethereum | >= 1.9.4, < 1.9.20 |
Weakness: CWE-682 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4 x_refsource_CONFIRM
- https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20 x_refsource_MISC