GHSA-r33q-22hv-j29q
Denial of service in github.com/ethereum/go-ethereum
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/ethereum/go-ethereum | < 1.9.25 | 1.9.25 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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](https://github.com/ethereum/go-ethereum)
* Email us at [[email protected]](mailto:[email protected])
References
External links from the advisory. They lead to third-party sites.
- 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
- https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25
- https://pkg.go.dev/vuln/GO-2021-0063