{
"id": "GHSA-8qxj-f9rh-9fg2",
"aliases": [
"CVE-2019-14859"
],
"details": "A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.",
"summary": "Improper Verification of Cryptographic Signature in Pure-Python ECDSA",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.13.3"
}
]
}
],
"package": {
"name": "ecdsa",
"ecosystem": "PyPI"
}
}
],
"modified": "2024-09-20T16:52:23Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
}
],
"published": "2020-04-01T16:35:26Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14859",
"type": "ADVISORY"
},
{
"url": "https://github.com/warner/python-ecdsa/issues/114",
"type": "WEB"
},
{
"url": "https://github.com/warner/python-ecdsa/pull/115",
"type": "WEB"
},
{
"url": "https://github.com/tlsfuzzer/python-ecdsa/commit/3427fa29f319b27898a28601955807abb44c0830",
"type": "WEB"
},
{
"url": "https://github.com/tlsfuzzer/python-ecdsa/commit/9080d1d5ac533da0de00466aaffb49bee808bb4e",
"type": "WEB"
},
{
"url": "https://github.com/tlsfuzzer/python-ecdsa/commit/b0ea52bb3aa9a16c9a4a91fdc0041edbfed10b31",
"type": "WEB"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859",
"type": "WEB"
},
{
"url": "https://github.com/advisories/GHSA-8qxj-f9rh-9fg2",
"type": "ADVISORY"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2020-163.yaml",
"type": "WEB"
},
{
"url": "https://github.com/warner/python-ecdsa",
"type": "PACKAGE"
},
{
"url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3",
"type": "WEB"
},
{
"url": "https://pypi.org/project/ecdsa/0.13.3",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-347"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2020-01-02T15:15:00Z",
"github_reviewed_at": "2020-04-01T15:40:54Z"
}
}