{
"id": "GHSA-r28h-x6hv-2fq3",
"aliases": [
"CVE-2021-43570"
],
"details": "The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.",
"summary": "Improper Verification of Cryptographic Signature in starkbank-ecdsa",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.1"
}
]
}
],
"package": {
"name": "com.starkbank.ellipticcurve:starkbank-ecdsa",
"ecosystem": "Maven"
}
}
],
"modified": "2025-01-20T16:11:28Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2021-11-10T20:48:00Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43570",
"type": "ADVISORY"
},
{
"url": "https://github.com/starkbank/ecdsa-java/pull/16",
"type": "WEB"
},
{
"url": "https://github.com/starkbank/ecdsa-java/commit/ed22e484186d6c66d3686bfe39d01bdbabf219b6",
"type": "WEB"
},
{
"url": "https://github.com/starkbank/ecdsa-java",
"type": "PACKAGE"
},
{
"url": "https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1",
"type": "WEB"
},
{
"url": "https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-347"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2021-11-09T22:15:00Z",
"github_reviewed_at": "2021-11-10T18:25:02Z"
}
}