{
"id": "GHSA-33vf-4xgg-9r58",
"aliases": [
"CVE-2020-5249"
],
"details": "### Impact\nIf an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as [HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting).\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to [CVE-2020-5247](https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v), which fixed this vulnerability but only for regular responses.\n\n### Patches\nThis has been fixed in 4.3.3 and 3.12.4.\n\n### Workarounds\nUsers can not allow untrusted/user input in the Early Hints response header.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [puma](https://github.com/puma/puma)\n* Email us a project maintainer. [Email addresses are listed in our Code of Conduct](https://github.com/puma/puma/blob/master/CODE_OF_CONDUCT.md#enforcement).",
"summary": "HTTP Response Splitting (Early Hints) in Puma",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.12.4"
}
]
}
],
"package": {
"name": "puma",
"ecosystem": "RubyGems"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.3.3"
}
]
}
],
"package": {
"name": "puma",
"ecosystem": "RubyGems"
}
}
],
"modified": "2023-05-16T16:16:20Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
}
],
"published": "2020-03-03T23:33:16Z",
"references": [
{
"url": "https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58",
"type": "WEB"
},
{
"url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5249",
"type": "ADVISORY"
},
{
"url": "https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3",
"type": "WEB"
},
{
"url": "https://github.com/puma/puma",
"type": "PACKAGE"
},
{
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD",
"type": "WEB"
},
{
"url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-113",
"CWE-74"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2020-03-02T16:15:12Z",
"github_reviewed_at": "2020-03-02T15:03:13Z"
}
}