CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS
Percentile
73.1%
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~}~}"/}}
This issue has been patched on XWiki 14.4 and 13.10.6.
It’s possible to fix the vulnerability by updating XWiki.Mentions.MentionsMacro
and edit the Macro code
field of the XWiki.WikiMacroClass
XObject.
<a href>$content</a>
Must be replaced by
<a href>
$escapetool.xml($content)
</a>
See the patches:
If you have any questions or comments about this advisory:
Vendor | Product | Version | CPE |
---|---|---|---|
org.xwiki.platform | xwiki-platform-mentions-ui | * | cpe:2.3:a:org.xwiki.platform:xwiki-platform-mentions-ui:*:*:*:*:*:*:*:* |
github.com/advisories/GHSA-c5v8-2q4r-5w9v
github.com/xwiki/xwiki-platform/commit/4032dc896857597efd169966dc9e2752a9fdd459#diff-4fe22885f772e47d3561a05348f73921669ec12d4413b220383b73c7ae484bc4R608-R610
github.com/xwiki/xwiki-platform/commit/4f290d87a8355e967378a1ed6aee23a06ba162eb
github.com/xwiki/xwiki-platform/security/advisories/GHSA-c5v8-2q4r-5w9v
jira.xwiki.org/browse/XWIKI-19752
nvd.nist.gov/vuln/detail/CVE-2022-36098