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XWiki Platform vulnerable to reflected cross-site scripting through revision parameter in content menu

Critical severity GitHub Reviewed Published Nov 6, 2023 in xwiki/xwiki-platform • Updated Nov 8, 2023

Package

maven org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven)

Affected versions

>= 9.7-rc-1, < 14.10.14
>= 15.0-rc-1, < 15.5.1

Patched versions

14.10.14
15.5.1

Description

Impact

XWiki is vulnerable to reflected cross-site scripting (RXSS) via the rev parameter that is used in the content of the content menu without escaping. If an attacker can convince a user to visit a link with a crafted parameter, this allows the attacker to execute arbitrary actions in the name of the user, including remote code (Groovy) execution in the case of a user with programming right, compromising the confidentiality, integrity and availability of the whole XWiki installation.

The vulnerability can be demonstrated by opening <xwiki-host>/xwiki/bin/view/Main/?rev=xar%3Aorg.xwiki.platform%3Axwiki-platform-distribution-flavor-common%2F15.5%25%25%22%3e%3cscript%3ealert(1)%3c%2fscript%3e where <xwiki-host> is the URL of your XWiki installation. If an alert is displayed, the installation is vulnerable.

Patches

This has been patched in XWiki 15.6 RC1, 15.5.1 and 14.10.14.

Workarounds

The patch can be manually applied without upgrading (or restarting) the instance.

References

Attribution

We thank Agostino Parentela, Vulnerability Management Engineer of TicketOne S.p.A., [email protected] for reporting this vulnerability.

References

@michitux michitux published to xwiki/xwiki-platform Nov 6, 2023
Published by the National Vulnerability Database Nov 6, 2023
Published to the GitHub Advisory Database Nov 8, 2023
Reviewed Nov 8, 2023
Last updated Nov 8, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS score

1.091%
(85th percentile)

Weaknesses

CVE ID

CVE-2023-46732

GHSA ID

GHSA-j9rc-w3wv-fv62

Source code

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