ghsa-vg46-2rrj-3647
Vulnerability from github
Published
2022-10-26 22:08
Modified
2023-01-11 15:00
Severity ?
Summary
Twisted vulnerable to NameVirtualHost Host header injection
Details
When the host header does not match a configured host, twisted.web.vhost.NameVirtualHost
will return a NoResource
resource which renders the Host header unescaped into the 404 response allowing HTML and script injection.
Example configuration: ```python from twisted.web.server import Site from twisted.web.vhost import NameVirtualHost from twisted.internet import reactor
resource = NameVirtualHost()
site = Site(resource)
reactor.listenTCP(8080, site)
reactor.run()
Output:
❯ curl -H"Host:
HELLO THERE
" http://localhost:8080/No Such Resource
host b'
hello there
' not in vhost map```
This vulnerability was introduced in f49041bb67792506d85aeda9cf6157e92f8048f4 and first appeared in the 0.9.4 release.
{ "affected": [ { "package": { "ecosystem": "PyPI", "name": "twisted" }, "ranges": [ { "events": [ { "introduced": "0.9.4" }, { "fixed": "22.10.0rc1" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2022-39348" ], "database_specific": { "cwe_ids": [ "CWE-79", "CWE-80" ], "github_reviewed": true, "github_reviewed_at": "2022-10-26T22:08:39Z", "nvd_published_at": "2022-10-26T20:15:00Z", "severity": "MODERATE" }, "details": "When the host header does not match a configured host, `twisted.web.vhost.NameVirtualHost` will return a `NoResource` resource which renders the Host header unescaped into the 404 response allowing HTML and script injection.\n\nExample configuration:\n```python\nfrom twisted.web.server import Site\nfrom twisted.web.vhost import NameVirtualHost\nfrom twisted.internet import reactor\n\nresource = NameVirtualHost()\nsite = Site(resource)\nreactor.listenTCP(8080, site)\nreactor.run()\n```\nOutput:\n```\n\u276f curl -H\"Host:\u003ch1\u003eHELLO THERE\u003c/h1\u003e\" http://localhost:8080/\n\n\u003chtml\u003e\n \u003chead\u003e\u003ctitle\u003e404 - No Such Resource\u003c/title\u003e\u003c/head\u003e\n \u003cbody\u003e\n \u003ch1\u003eNo Such Resource\u003c/h1\u003e\n \u003cp\u003ehost b\u0027\u003ch1\u003ehello there\u003c/h1\u003e\u0027 not in vhost map\u003c/p\u003e\n \u003c/body\u003e\n\u003c/html\u003e\n```\n\nThis vulnerability was introduced in f49041bb67792506d85aeda9cf6157e92f8048f4 and first appeared in the 0.9.4 release.", "id": "GHSA-vg46-2rrj-3647", "modified": "2023-01-11T15:00:01Z", "published": "2022-10-26T22:08:39Z", "references": [ { "type": "WEB", "url": "https://github.com/twisted/twisted/security/advisories/GHSA-vg46-2rrj-3647" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39348" }, { "type": "WEB", "url": "https://github.com/twisted/twisted/commit/f2f5e81c03f14e253e85fe457e646130780db40b" }, { "type": "WEB", "url": "https://github.com/twisted/twisted/commit/f49041bb67792506d85aeda9cf6157e92f8048f4" }, { "type": "PACKAGE", "url": "https://github.com/twisted/twisted" }, { "type": "WEB", "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00038.html" }, { "type": "WEB", "url": "https://security.gentoo.org/glsa/202301-02" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "type": "CVSS_V3" } ], "summary": "Twisted vulnerable to NameVirtualHost Host header injection" }
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