GHSA-663w-2xp3-5739

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Source
https://github.com/advisories/GHSA-663w-2xp3-5739
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-663w-2xp3-5739/GHSA-663w-2xp3-5739.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-663w-2xp3-5739
Aliases
Published
2023-10-25T21:02:49Z
Modified
2024-02-16T08:21:03.416446Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
org.xwiki.rendering:xwiki-rendering-xml Improper Neutralization of Invalid Characters in Identifiers in Web Pages vulnerability
Details

Impact

The cleaning of attributes during XHTML rendering, introduced in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid attribute names. This can be exploited, e.g., via the link syntax in any content that supports XWiki syntax like comments in XWiki:

[[Link1>>https://XWiki.example.com||/onmouseover="alert('XSS1')"]]

When a user moves the mouse over this link, the malicious JavaScript code is executed in the context of the user session. When this user is a privileged user who has programming rights, this allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance.

While this attribute was correctly recognized as not allowed, the attribute was still printed with a prefix data-xwiki-translated-attribute- without further cleaning or validation.

Note that while versions below 14.6 are not vulnerable to this particular vulnerability, they are still vulnerable to XSS through attributes in XWiki syntax, see the corresponding advisory.

Patches

This problem has been patched in XWiki 14.10.4 and 15.0 RC1 by removing characters not allowed in data attributes and then validating the cleaned attribute again.

Workarounds

There are no known workarounds apart from upgrading to a version including the fix.

References

  • https://jira.xwiki.org/browse/XRENDERING-697
  • https://github.com/xwiki/xwiki-rendering/commit/f4d5acac451dccaf276e69f0b49b72221eef5d2f

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki * Email us at XWiki Security mailing-list

References

Affected packages

Maven / org.xwiki.rendering:xwiki-rendering-xml

Package

Name
org.xwiki.rendering:xwiki-rendering-xml
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.rendering/xwiki-rendering-xml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
14.6-rc-1
Fixed
14.10.4

Affected versions

14.*

14.6-rc-1
14.6
14.7-rc-1
14.7
14.8-rc-1
14.8
14.9-rc-1
14.9
14.10
14.10.1
14.10.2
14.10.3