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Improper Neutralization of Script in Attributes in XWiki (X)HTML renderers

Critical severity GitHub Reviewed Published May 10, 2023 in xwiki/xwiki-rendering • Updated Nov 7, 2023

Package

maven org.xwiki.platform:xwiki-core-rendering-api (Maven)

Affected versions

<= 3.0-milestone-2

Patched versions

None
maven org.xwiki.platform:xwiki-platform-annotation-core (Maven)
< 14.6-rc-1
14.6-rc-1
maven org.xwiki.rendering:xwiki-rendering-syntax-annotatedhtml5 (Maven)
< 14.6-rc-1
14.6-rc-1
maven org.xwiki.rendering:xwiki-rendering-syntax-annotatedxhtml (Maven)
< 14.6-rc-1
14.6-rc-1
maven org.xwiki.rendering:xwiki-rendering-syntax-html (Maven)
< 14.6-rc-1
14.6-rc-1
maven org.xwiki.rendering:xwiki-rendering-syntax-html5 (Maven)
< 14.6-rc-1
14.6-rc-1
maven org.xwiki.rendering:xwiki-rendering-syntax-xhtml (Maven)
< 14.6-rc-1
14.6-rc-1

Description

Impact

HTML rendering didn't check for dangerous attributes/attribute values. This allowed cross-site scripting (XSS) attacks via attributes and link URLs, e.g., supported in XWiki syntax.

Patches

This has been patched in XWiki 14.6 RC1.

Workarounds

There are no known workarounds apart from upgrading to a fixed version.

References

For more information

If you have any questions or comments about this advisory:

References

@michitux michitux published to xwiki/xwiki-rendering May 10, 2023
Published by the National Vulnerability Database May 10, 2023
Published to the GitHub Advisory Database May 11, 2023
Reviewed May 11, 2023
Last updated Nov 7, 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
Low
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:L/UI:R/S:C/C:H/I:H/A:H

EPSS score

0.098%
(42nd percentile)

Weaknesses

CVE ID

CVE-2023-32070

GHSA ID

GHSA-6gf5-c898-7rxp

Source code

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