GHSA-C5V8-2Q4R-5W9V
Vulnerability from github – Published: 2022-09-16 17:36 – Updated: 2022-09-16 17:36Impact
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:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
{
"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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| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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