GHSA-C5V8-2Q4R-5W9V

Vulnerability from github – Published: 2022-09-16 17:36 – Updated: 2022-09-16 17:36
VLAI?
Summary
XWiki Platform Mentions UI vulnerable to Cross-site Scripting
Details

Impact

It's possible to store Javascript or groovy scripts in an mention macro anchor or reference field. The stored code is executed by anyone visiting the page with the mention.

For example, the example below will create a file at /tmp/exploit.txt:

{{mention reference="XWiki.Translation" anchor="{{/html~}~}{{async async=~"true~" cached=~"false~" context=~"doc.reference~"~}~}{{groovy~}~}new File(~"/tmp/exploit.txt~").withWriter { out -> out.println(~"owned!~"); }{{/groovy~}~}{{/async~}~}"/}}

Patches

This issue has been patched on XWiki 14.4 and 13.10.6.

Workarounds

It's possible to fix the vulnerability by updating XWiki.Mentions.MentionsMacro and edit the Macro code field of the XWiki.WikiMacroClass XObject.

<a id="$anchor" class="$stringtool.join($cssClasses, ' ')" data-reference="$services.model.serialize($reference.reference, 'default')" href="$link">$content</a>

Must be replaced by 

<a id="$escapetool.xml($anchor)" class="$stringtool.join($cssClasses, ' ')" data-reference="$escapetool.xml($services.model.serialize($reference.reference, 'default'))" href="$escapetool.xml($link)">
  $escapetool.xml($content)
</a>

See the patches: - 14.4: https://github.com/xwiki/xwiki-platform/commit/4f290d87a8355e967378a1ed6aee23a06ba162eb - 13.10.6: https://github.com/xwiki/xwiki-platform/commit/4032dc896857597efd169966dc9e2752a9fdd459#diff-4fe22885f772e47d3561a05348f73921669ec12d4413b220383b73c7ae484bc4R608-R610

References

  • https://jira.xwiki.org/browse/XWIKI-19752

For more information

If you have any questions or comments about this advisory:

Severity ?
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-mentions-ui"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.5-rc-1"
            },
            {
              "fixed": "13.10.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-mentions-ui"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.0"
            },
            {
              "fixed": "14.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-36098"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-16T17:36:44Z",
    "nvd_published_at": "2022-09-08T21:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nIt\u0027s possible to store Javascript or groovy scripts in an mention macro anchor or reference field. The stored code is executed by anyone visiting the page with the mention.\n\nFor example, the example below will create a file at `/tmp/exploit.txt`:\n\n```\n{{mention reference=\"XWiki.Translation\" anchor=\"{{/html~}~}{{async async=~\"true~\" cached=~\"false~\" context=~\"doc.reference~\"~}~}{{groovy~}~}new File(~\"/tmp/exploit.txt~\").withWriter { out -\u003e out.println(~\"owned!~\"); }{{/groovy~}~}{{/async~}~}\"/}}\n```\n\n### Patches\nThis issue has been patched on XWiki 14.4 and 13.10.6.\n\n### Workarounds\nIt\u0027s possible to fix the vulnerability by updating `XWiki.Mentions.MentionsMacro` and edit the `Macro code` field of the `XWiki.WikiMacroClass` XObject.\n\n```velocity\n\u003ca id=\"$anchor\" class=\"$stringtool.join($cssClasses, \u0027 \u0027)\" data-reference=\"$services.model.serialize($reference.reference, \u0027default\u0027)\" href=\"$link\"\u003e$content\u003c/a\u003e\n```\n\nMust be replaced by \n\n```velocity\n\u003ca id=\"$escapetool.xml($anchor)\" class=\"$stringtool.join($cssClasses, \u0027 \u0027)\" data-reference=\"$escapetool.xml($services.model.serialize($reference.reference, \u0027default\u0027))\" href=\"$escapetool.xml($link)\"\u003e\n  $escapetool.xml($content)\n\u003c/a\u003e\n```\n\nSee the patches:\n- 14.4: https://github.com/xwiki/xwiki-platform/commit/4f290d87a8355e967378a1ed6aee23a06ba162eb\n- 13.10.6: https://github.com/xwiki/xwiki-platform/commit/4032dc896857597efd169966dc9e2752a9fdd459#diff-4fe22885f772e47d3561a05348f73921669ec12d4413b220383b73c7ae484bc4R608-R610\n\n### References\n\n- https://jira.xwiki.org/browse/XWIKI-19752\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n- Email us at [Security Mailing List](mailto:security@xwiki.org)",
  "id": "GHSA-c5v8-2q4r-5w9v",
  "modified": "2022-09-16T17:36:44Z",
  "published": "2022-09-16T17:36:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-c5v8-2q4r-5w9v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36098"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/4032dc896857597efd169966dc9e2752a9fdd459#diff-4fe22885f772e47d3561a05348f73921669ec12d4413b220383b73c7ae484bc4R608-R610"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/4f290d87a8355e967378a1ed6aee23a06ba162eb"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xwiki/xwiki-platform"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/XWIKI-19752"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XWiki Platform Mentions UI vulnerable to Cross-site Scripting"
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.