{
"id": "GHSA-xxxq-chmp-67g4",
"aliases": [
"CVE-2020-14967"
],
"details": "### Impact\nJsrsasign supports RSA PKCS#1 v1.5 (i.e. RSAES-PKCS1-v1_5) and RSA-OAEP encryption and decryption. Its encrypted message is represented as BigInteger. When there is a valid encrypted message, a crafted message with prepending zeros can be decrypted by this vulnerability.\n\n- If you don't use RSA PKCS1-v1_5 or RSA-OAEP decryption, this vulnerability is not affected.\n- Risk to forge contents of encrypted message is very low.\n- Risk to raise memory corruption is low since jsrsasign uses BigInteger class.\n\n### Patches\nUsers using RSA PKCS1-v1_5 or RSA-OAEP decryption should upgrade to 8.0.18.\n\n### Workarounds\nReject RSA PKCS1-v1_5 or RSA-OAEP encrypted message with unnecessary prepending zeros.\n\n### References\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-14967\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967\nhttps://vuldb.com/?id.157124\nhttps://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt\nhttps://github.com/kjur/jsrsasign/issues/439\n\n\n\n",
"summary": "RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.0.18"
}
]
}
],
"package": {
"name": "jsrsasign",
"ecosystem": "npm"
}
}
],
"modified": "2023-01-31T01:29:40Z",
"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": "2020-06-26T16:27:08Z",
"references": [
{
"url": "https://github.com/kjur/jsrsasign/security/advisories/GHSA-xxxq-chmp-67g4",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14967",
"type": "ADVISORY"
},
{
"url": "https://github.com/kjur/jsrsasign/issues/439",
"type": "WEB"
},
{
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967",
"type": "WEB"
},
{
"url": "https://github.com/kjur/jsrsasign",
"type": "PACKAGE"
},
{
"url": "https://github.com/kjur/jsrsasign/releases/tag/8.0.17",
"type": "WEB"
},
{
"url": "https://github.com/kjur/jsrsasign/releases/tag/8.0.18",
"type": "WEB"
},
{
"url": "https://kjur.github.io/jsrsasign",
"type": "WEB"
},
{
"url": "https://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt",
"type": "WEB"
},
{
"url": "https://security.netapp.com/advisory/ntap-20200724-0001",
"type": "WEB"
},
{
"url": "https://vuldb.com/?id.157124",
"type": "WEB"
},
{
"url": "https://www.npmjs.com/package/jsrsasign",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2020-06-22T12:15:00Z",
"github_reviewed_at": "2020-06-26T16:26:32Z"
}
}