ghsa-hf43-47q4-fhq5
Vulnerability from github
Impact
The HTML escaping of escaping tool that is used in XWiki doesn't escape {, which, when used in certain places, allows XWiki syntax injection and thereby remote code execution.
To reproduce in an XWiki installation, open <xwiki-host>/xwiki/bin/view/Panels/PanelLayoutUpdate?place=%7B%7B%2Fhtml%7D%7D%7B%7Basync%20async%3Dfalse%7D%7D%7B%7Bvelocity%7D%7D%23evaluate(%24request.eval)%7B%7B%2Fvelocity%7D%7D%7B%7B%2Fasync%7D%7D&eval=Hello%20from%20URL%20Parameter!%20I%20got%20programming%3A%20%24services.security.authorization.hasAccess(%27programming%27) where <xwiki-host> is the URL of your XWiki installation. If this displays You are not admin on this place Hello from URL Parameter! I got programming: true, the installation is vulnerable.
Patches
The vulnerability has been fixed on XWiki 14.10.19, 15.5.5, and 15.9 RC1.
Workarounds
Apart from upgrading, there is no generic workaround. However, replacing $escapetool.html by $escapetool.xml in XWiki documents fixes the vulnerability. In a standard XWiki installation, we're only aware of the document Panels.PanelLayoutUpdate that exposes this vulnerability, patching this document is thus a workaround. Any extension could expose this vulnerability and might thus require patching, too.
References
- https://github.com/xwiki/xwiki-commons/commit/b94142e2a66ec32e89eacab67c3da8d91f5ef93a
- https://jira.xwiki.org/browse/XCOMMONS-2828
- https://jira.xwiki.org/browse/XWIKI-21438
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.commons:xwiki-commons-velocity"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.1"
},
{
"fixed": "14.10.19"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.commons:xwiki-commons-velocity"
},
"ranges": [
{
"events": [
{
"introduced": "15.0-rc-1"
},
{
"fixed": "15.5.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.commons:xwiki-commons-velocity"
},
"ranges": [
{
"events": [
{
"introduced": "15.6-rc-1"
},
{
"fixed": "15.9-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-31996"
],
"database_specific": {
"cwe_ids": [
"CWE-94",
"CWE-95"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-10T17:16:37Z",
"nvd_published_at": "2024-04-10T21:15:07Z",
"severity": "CRITICAL"
},
"details": "### Impact\nThe HTML escaping of escaping tool that is used in XWiki doesn\u0027t escape `{`, which, when used in certain places, allows XWiki syntax injection and thereby remote code execution.\n\nTo reproduce in an XWiki installation, open `\u003cxwiki-host\u003e/xwiki/bin/view/Panels/PanelLayoutUpdate?place=%7B%7B%2Fhtml%7D%7D%7B%7Basync%20async%3Dfalse%7D%7D%7B%7Bvelocity%7D%7D%23evaluate(%24request.eval)%7B%7B%2Fvelocity%7D%7D%7B%7B%2Fasync%7D%7D\u0026eval=Hello%20from%20URL%20Parameter!%20I%20got%20programming%3A%20%24services.security.authorization.hasAccess(%27programming%27)` where `\u003cxwiki-host\u003e` is the URL of your XWiki installation. If this displays `You are not admin on this place Hello from URL Parameter! I got programming: true`, the installation is vulnerable.\n\n### Patches\nThe vulnerability has been fixed on XWiki 14.10.19, 15.5.5, and 15.9 RC1.\n\n### Workarounds\nApart from upgrading, there is no generic workaround. However, replacing `$escapetool.html` by `$escapetool.xml` in XWiki documents fixes the vulnerability. In a standard XWiki installation, we\u0027re only aware of the document `Panels.PanelLayoutUpdate` that exposes this vulnerability, patching this document is thus a workaround. Any extension could expose this vulnerability and might thus require patching, too.\n\n### References\n- https://github.com/xwiki/xwiki-commons/commit/b94142e2a66ec32e89eacab67c3da8d91f5ef93a\n- https://jira.xwiki.org/browse/XCOMMONS-2828\n- https://jira.xwiki.org/browse/XWIKI-21438",
"id": "GHSA-hf43-47q4-fhq5",
"modified": "2024-04-10T22:01:56Z",
"published": "2024-04-10T17:16:37Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-hf43-47q4-fhq5"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31996"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-commons/commit/b0805160ec7b01ee12417e79cb384e60ae4817aa"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-commons/commit/b94142e2a66ec32e89eacab67c3da8d91f5ef93a"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-commons/commit/ed7ff515a2436a1c6dcbd0c6ca0c41e434d58915"
},
{
"type": "PACKAGE",
"url": "https://github.com/xwiki/xwiki-commons"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XCOMMONS-2828"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XWIKI-21438"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "XWiki Commons missing escaping of `{` in Velocity escapetool allows remote code execution"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.