ethereum/go-ethereum · Security
Denial of service in github.com/ethereum/go-ethereum
- GHSA ID
- GHSA-r33q-22hv-j29q
- CVE ID
- CVE-2020-26264
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
Impact
A DoS vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client.
Patches
The vulnerability was patched in https://github.com/ethereum/go-ethereum/pull/21896.
Workarounds
This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit.
It can also be patched by manually applying the patch in https://github.com/ethereum/go-ethereum/pull/21896.
For more information
If you have any questions or comments about this advisory:
- Open an issue in go-ethereum
- Email us at [email protected]
CWEs
- CWE-400 · Uncontrolled Resource Consumption
References
- https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q ↗
- https://nvd.nist.gov/vuln/detail/CVE-2020-26264 ↗
- https://github.com/ethereum/go-ethereum/pull/21896 ↗
- https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46 ↗
- https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25 ↗
- https://pkg.go.dev/vuln/GO-2021-0063 ↗
- https://github.com/advisories/GHSA-r33q-22hv-j29q ↗