CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
10.3%
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.
The vulnerability has been fixed on XWiki 14.10.19, 15.5.5, and 15.9 RC1.
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.
Vendor | Product | Version | CPE |
---|---|---|---|
org.xwiki.commons | xwiki-commons-velocity | * | cpe:2.3:a:org.xwiki.commons:xwiki-commons-velocity:*:*:*:*:*:*:*:* |
github.com/advisories/GHSA-hf43-47q4-fhq5
github.com/xwiki/xwiki-commons/commit/b0805160ec7b01ee12417e79cb384e60ae4817aa
github.com/xwiki/xwiki-commons/commit/b94142e2a66ec32e89eacab67c3da8d91f5ef93a
github.com/xwiki/xwiki-commons/commit/ed7ff515a2436a1c6dcbd0c6ca0c41e434d58915
github.com/xwiki/xwiki-commons/security/advisories/GHSA-hf43-47q4-fhq5
jira.xwiki.org/browse/XCOMMONS-2828
jira.xwiki.org/browse/XWIKI-21438
nvd.nist.gov/vuln/detail/CVE-2024-31996