9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
0.009 Low
EPSS
Percentile
82.7%
Any user who can edit their own user profile and notification settings can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps:
{{cache id="security" timeToLive="1"}}{{groovy}}println("Hello from groovy!"){{/groovy}}{{/cache}}
If the text “Profile of Hello from groovy!” and/or “liked by Hello from groovy!” is displayed, the attack succeeded. The expected result would have been that the entered first name is displayed as-is in the description of the feed.
This has been patched in XWiki 14.10.6 and 15.2RC1.
The main security fix can be manually applied by patching the affected document XWiki.Notifications.Code.NotificationRSSService
as shown in the patch. This will break the link to the differences, though as this requires additional changes to Velocity templates as shown in the patch. While the default template is available in the instance and can be easily patched, the template for mentions is contained in a .jar
-file and thus cannot be fixed without replacing that jar.
github.com/advisories/GHSA-94pf-92hw-2hjc
github.com/xwiki/xwiki-platform/commit/217e5bb7a657f2991b154a16ef4d5ae9c29ad39c
github.com/xwiki/xwiki-platform/commit/217e5bb7a657f2991b154a16ef4d5ae9c29ad39c#diff-7221a548809fa2ba34348556f4b5bd436463c559ebdf691197932ee7ce4478ca
github.com/xwiki/xwiki-platform/commit/217e5bb7a657f2991b154a16ef4d5ae9c29ad39c#diff-b261c6eac3108c3e6e734054c28a78f59d3439ab72fe8582dadf87670a0d15a4
github.com/xwiki/xwiki-platform/security/advisories/GHSA-94pf-92hw-2hjc
jira.xwiki.org/browse/XWIKI-20610
nvd.nist.gov/vuln/detail/CVE-2023-36469