{
"id": "GHSA-8q89-pwhh-7wfq",
"aliases": [
"CVE-2018-18531"
],
"details": "text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and text/impl/FiveLetterFirstNameTextCreator.java in kaptcha 2.3.2 use the Random (rather than SecureRandom) function for generating CAPTCHA values, which makes it easier for remote attackers to bypass intended access restrictions via a brute-force approach.",
"summary": "Use of Insufficiently Random Values in penggle:kaptcha",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.3.2"
}
]
}
],
"package": {
"name": "com.github.penggle:kaptcha",
"ecosystem": "Maven"
}
}
],
"modified": "2022-09-14T21:57:07Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2018-10-23T16:08:56Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-18531",
"type": "ADVISORY"
},
{
"url": "https://github.com/penggle/kaptcha/issues/3",
"type": "WEB"
},
{
"url": "https://github.com/advisories/GHSA-8q89-pwhh-7wfq",
"type": "ADVISORY"
},
{
"url": "https://github.com/penggle/kaptcha",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2020-06-16T21:26:18Z"
}
}