{
"id": "GHSA-92vm-mxjf-jqf3",
"aliases": [
"CVE-2021-43572"
],
"details": "The `verify` function in the Stark Bank Python ECDSA library (starkbank-ecdsa) 2.0.0 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": "2.0.1"
}
]
}
],
"package": {
"name": "starkbank-ecdsa",
"ecosystem": "PyPI"
}
}
],
"modified": "2024-10-25T14:49:40Z",
"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": "2021-11-10T20:41:39Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43572",
"type": "ADVISORY"
},
{
"url": "https://github.com/starkbank/ecdsa-python/commit/d136170666e9510eb63c2572551805807bd4c17f",
"type": "WEB"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/starkbank-ecdsa/PYSEC-2021-426.yaml",
"type": "WEB"
},
{
"url": "https://github.com/starkbank/ecdsa-python",
"type": "PACKAGE"
},
{
"url": "https://github.com/starkbank/ecdsa-python/releases/tag/v2.0.1",
"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": "2021-11-10T18:23:18Z"
}
}