CVE-2023-29205: Xwiki platform rendering xwiki Cross-Site Scripting Vulnerability

CRITICAL
Advisory Identifier: GHSA-vxf7-mx22-jr24
CVSS 9.9
CWE-79
Published
Advisory Summary

CVE-2023-29205 is a CRITICAL (CVSS 9.9) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Xwiki platform rendering xwiki libraries in the Maven ecosystem. The issue involves xwiki-platform-rendering-xwiki vulnerable to stored cross-site scripting via html and raw macro. Remediation is available by upgrading affected packages to version 14.8-rc-1.

CVE-2023-29205 at a Glance

CVE Identifier CVE-2023-29205
GHSA Identifier GHSA-vxf7-mx22-jr24
Severity CRITICAL
CVSS v3.1 Base Score 9.9
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Xwiki platform rendering xwiki
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2023-29205

To remediate this vulnerability, upgrade all affected Xwiki platform rendering xwiki dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.xwiki.platform:xwiki-platform-rendering-xwiki fixed: 14.8-rc-1
<dependency>
    <groupId>org.xwiki.platform</groupId>
    <artifactId>xwiki-platform-rendering-xwiki</artifactId>
    <version>14.8-rc-1</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.xwiki.platform

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-29205, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.xwiki.platform

Analyze the terminal output to locate any version of Xwiki platform rendering xwiki in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.8-rc-1), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.xwiki.platform command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Xwiki platform rendering xwiki, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact The HTML macro does not systematically perform a proper neutralization of script-related html tags. As a result, any user able to use the html macro in XWiki, is able to introduce an XSS attack. This can be particularly dangerous since in a standard wiki, any user is able to use the html macro directly in their own user profile page. ### Patches The problem has been patched in XWiki 14.8RC1. The patch involve that the HTML macro are systematically cleaned up whenever the user does not have script right. ### Workarounds There's no workaround for this issue. ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira](https://jira.xwiki.org) * Email us at [security ML](mailto:security@xwiki.org)

CVE-2023-29205 Affected Xwiki platform rendering xwiki Versions

1 component(s)
Fixed Versions:
14.8-rc-1
Product / Package Ecosystem Affected Versions Fixed Version
org.xwiki.platform:xwiki-platform-rendering-xwiki
Maven
< 14.8-rc-1
14.8-rc-1

References

Frequently Asked Questions

What is CVE-2023-29205?
CVE-2023-29205 is a security vulnerability in Xwiki platform rendering xwiki involving xwiki-platform-rendering-xwiki vulnerable to stored cross-site scripting via HTML and raw macro under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Xwiki platform rendering xwiki versions are affected?
Affected versions include releases prior to 14.8-rc-1 across affected packages: org.xwiki.platform:xwiki-platform-rendering-xwiki.
What version fixes CVE-2023-29205?
Upgrading to 14.8-rc-1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is xwiki-platform-rendering-xwiki affected?
Yes, org.xwiki.platform:xwiki-platform-rendering-xwiki is affected in releases prior to 14.8-rc-1. Upgrade your dependency to 14.8-rc-1 or later.
What is the CVSS score of CVE-2023-29205?
CVE-2023-29205 has a CVSS v3.1 base score of 9.9 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2023-29205?
CVE-2023-29205 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2023-29205?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.xwiki.platform'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vxf7-mx22-jr24",
  "modified" : "2023-04-26T22:17:01Z",
  "published" : "2023-04-12T20:38:44Z",
  "aliases" : [ "CVE-2023-29205" ],
  "summary" : "org.xwiki.platform:xwiki-platform-rendering-xwiki vulnerable to stored cross-site scripting via HTML and raw macro",
  "details" : "### Impact\n\nThe HTML macro does not systematically perform a proper neutralization of script-related html tags. As a result, any user able to use the html macro in XWiki, is able to introduce an XSS attack. This can be particularly dangerous since in a standard wiki, any user is able to use the html macro directly in their own user profile page. \n\n### Patches\n\nThe problem has been patched in XWiki 14.8RC1. The patch involve that the HTML macro are systematically cleaned up whenever the user does not have script right. \n\n### Workarounds\n\nThere's no workaround for this issue.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira](https://jira.xwiki.org)\n* Email us at [security ML](mailto:security@xwiki.org)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.xwiki.platform:xwiki-platform-rendering-xwiki"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.8-rc-1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vxf7-mx22-jr24"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-29205"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xwiki/xwiki-platform"
  }, {
    "type" : "WEB",
    "url" : "https://jira.xwiki.org/browse/XWIKI-18568"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-04-12T20:38:44Z",
    "nvd_published_at" : "2023-04-15T16:15:00Z"
  }
}