medium6.5
CVE-2020-26264
Denial of service in github.com/ethereum/go-ethereum
Impact
### 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 [security@ethereum.org](mailto:security@ethereum.org)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/ethereum/go-ethereum | < 1.9.25 | 1.9.25 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ethereum | Go Ethereum | before 1.9.25 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46
- https://github.com/ethereum/go-ethereum/pull/21896
- https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25
- https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q
- https://github.com/advisories/GHSA-r33q-22hv-j29q
- https://nvd.nist.gov/vuln/detail/CVE-2020-26264
- https://pkg.go.dev/vuln/GO-2021-0063