ghsa-7f42-p84j-f58p
Vulnerability from github
Published
2018-03-21 11:56
Modified
2023-01-23 20:47
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Sanitize vulnerable to Improper Input Validation and Cross-site Scripting
Details

When Sanitize <= 4.6.2 is used in combination with libxml2 >= 2.9.2, a specially crafted HTML fragment can cause libxml2 to generate improperly escaped output, allowing non-whitelisted attributes to be used on whitelisted elements.

This can allow HTML and JavaScript injection, which could result in XSS if Sanitize's output is served to browsers.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "sanitize"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "4.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-3740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:22:33Z",
    "nvd_published_at": "2018-03-30T19:29:00Z",
    "severity": "HIGH"
  },
  "details": "When Sanitize \u003c= 4.6.2 is used in combination with libxml2 \u003e= 2.9.2, a specially crafted HTML fragment can cause libxml2 to generate improperly escaped output, allowing non-whitelisted attributes to be used on whitelisted elements.\n\nThis can allow HTML and JavaScript injection, which could result in XSS if Sanitize\u0027s output is served to browsers.",
  "id": "GHSA-7f42-p84j-f58p",
  "modified": "2023-01-23T20:47:11Z",
  "published": "2018-03-21T11:56:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3740"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rgrove/sanitize/issues/176"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rgrove/sanitize/commit/01629a162e448a83d901456d0ba8b65f3b03d46e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rgrove/sanitize/commit/93feeb38e21864146bb29191792b971dbe1ec62e"
    },
    {
      "type": "WEB",
      "url": "https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rgrove/sanitize"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sanitize/CVE-2018-3740.yml"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2018/dsa-4358"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Sanitize vulnerable to Improper Input Validation and Cross-site Scripting"
}


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