{
"id": "GHSA-r33q-22hv-j29q",
"aliases": [
"CVE-2020-26264"
],
"details": "### Impact\n\nA DoS vulnerability can make a LES server crash via malicious `GetProofsV2` request from a connected LES client.\n\n### Patches\n\nThe vulnerability was patched in https://github.com/ethereum/go-ethereum/pull/21896. \n\n### Workarounds\n\nThis vulnerability only concerns users explicitly enabling `les` server; disabling `les` prevents the exploit. \nIt can also be patched by manually applying the patch in https://github.com/ethereum/go-ethereum/pull/21896. \n\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [go-ethereum](https://github.com/ethereum/go-ethereum)\n* Email us at [[email protected] ](mailto:[email protected] )",
"summary": "Denial of service in github.com/ethereum/go-ethereum",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.9.25"
}
]
}
],
"package": {
"name": "github.com/ethereum/go-ethereum",
"ecosystem": "Go"
}
}
],
"modified": "2023-02-09T19:39:22Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2021-06-29T21:14:07Z",
"references": [
{
"url": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26264",
"type": "ADVISORY"
},
{
"url": "https://github.com/ethereum/go-ethereum/pull/21896",
"type": "WEB"
},
{
"url": "https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46",
"type": "WEB"
},
{
"url": "https://github.com/ethereum/go-ethereum",
"type": "PACKAGE"
},
{
"url": "https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25",
"type": "WEB"
},
{
"url": "https://pkg.go.dev/vuln/GO-2021-0063",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2021-05-21T21:45:23Z"
}
}