{
"id": "GHSA-6mq2-37j5-w6r6",
"aliases": [
"CVE-2009-4492"
],
"details": "WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.",
"summary": "WEBrick Improper Input Validation vulnerability",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.0"
}
]
}
],
"package": {
"name": "webrick",
"ecosystem": "RubyGems"
},
"database_specific": {
"last_known_affected_version_range": "<= 1.3.1"
}
}
],
"modified": "2025-05-22T16:55:39Z",
"severity": [],
"published": "2017-10-24T18:33:38Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-4492",
"type": "ADVISORY"
},
{
"url": "https://github.com/advisories/GHSA-6mq2-37j5-w6r6",
"type": "ADVISORY"
},
{
"url": "https://github.com/ruby/webrick",
"type": "PACKAGE"
},
{
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2009-4492.yml",
"type": "WEB"
},
{
"url": "https://web.archive.org/web/20100113155532/http://www.vupen.com/english/advisories/2010/0089",
"type": "WEB"
},
{
"url": "https://web.archive.org/web/20100815010948/http://secunia.com/advisories/37949",
"type": "WEB"
},
{
"url": "https://web.archive.org/web/20170402100552/http://securitytracker.com/id?1023429",
"type": "WEB"
},
{
"url": "https://web.archive.org/web/20170908140655/http://www.securityfocus.com/archive/1/508830/100/0/threaded",
"type": "WEB"
},
{
"url": "https://web.archive.org/web/20200228145937/http://www.securityfocus.com/bid/37710",
"type": "WEB"
},
{
"url": "http://www.redhat.com/support/errata/RHSA-2011-0908.html",
"type": "WEB"
},
{
"url": "http://www.redhat.com/support/errata/RHSA-2011-0909.html",
"type": "WEB"
},
{
"url": "http://www.ruby-lang.org/en/news/2010/01/10/webrick-escape-sequence-injection",
"type": "WEB"
},
{
"url": "http://www.ush.it/team/ush/hack_httpd_escape/adv.txt",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-20"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2010-01-13T20:30:00Z",
"github_reviewed_at": "2020-06-16T21:19:44Z"
}
}