CVE-2023-26471: Xwiki platform rendering async macro XWiki Platform Users May Execute Vulnerability

CRITICAL
Advisory Identifier: GHSA-9cqm-5wf7-wcj7
CVSS 9.9
CWE-284
Published
Advisory Summary

CVE-2023-26471 is a CRITICAL (CVSS 9.9) xwiki platform users may execute vulnerability (CWE-284: Improper Access Control) affecting Xwiki platform rendering async macro libraries in the Maven ecosystem. The issue involves xwiki platform users may execute anything with superadmin right through comments and async macro. Remediation is available by upgrading affected packages to version 13.10.10, 14.4.6, 14.9.

CVE-2023-26471 at a Glance

CVE Identifier CVE-2023-26471
GHSA Identifier GHSA-9cqm-5wf7-wcj7
Severity CRITICAL
CVSS v3.1 Base Score 9.9
CWE Classification CWE-284: Improper Access Control
Affected Product Xwiki platform rendering async macro
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-2023-26471

To remediate this vulnerability, upgrade all affected Xwiki platform rendering async macro 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-async-macro fixed: 13.10.10
<dependency>
    <groupId>org.xwiki.platform</groupId>
    <artifactId>xwiki-platform-rendering-async-macro</artifactId>
    <version>13.10.10</version>
</dependency>
org.xwiki.platform:xwiki-platform-rendering-async-macro fixed: 14.4.6
<dependency>
    <groupId>org.xwiki.platform</groupId>
    <artifactId>xwiki-platform-rendering-async-macro</artifactId>
    <version>14.4.6</version>
</dependency>
org.xwiki.platform:xwiki-platform-rendering-async-macro fixed: 14.9
<dependency>
    <groupId>org.xwiki.platform</groupId>
    <artifactId>xwiki-platform-rendering-async-macro</artifactId>
    <version>14.9</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-2023-26471, 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 async macro in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 13.10.10), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Xwiki platform rendering async macro, 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 Comments are supposed to be executed with the right of superadmin but in restricted mode (anything dangerous is disabled) but the async macro is not taking into account the restricted mode. This means that any user with comment right can use the async macro to make it execute any wiki content with the right of superadmin as in: {{async}} {{groovy}}println "it works !"{{/groovy}} {{/async}} ### Patches This has been patched in XWiki 14.9, 14.4.6, and 13.10.10. ### Workarounds The only known workaround consists in applying [the following patch](https://github.com/xwiki/xwiki-platform/commit/00532d9f1404287cf3ec3a05056640d809516006) and rebuilding and redeploying `org.xwiki.platform:xwiki-platform-rendering-async-macro`. ### References * https://jira.xwiki.org/browse/XWIKI-20234 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira](http://jira.xwiki.org) * Email us at [Security ML](mailto:security@xwiki.org)

CVE-2023-26471 Affected Xwiki platform rendering async macro Versions

3 component(s)
Fixed Versions:
13.10.1014.4.614.9
Product / Package Ecosystem Affected Versions Fixed Version
org.xwiki.platform:xwiki-platform-rendering-async-macro
Maven
≥ 11.6-rc-1
< 13.10.10
13.10.10
org.xwiki.platform:xwiki-platform-rendering-async-macro
Maven
≥ 14.0
< 14.4.6
14.4.6
org.xwiki.platform:xwiki-platform-rendering-async-macro
Maven
≥ 14.5
< 14.9
14.9

References

Frequently Asked Questions

What is CVE-2023-26471?
CVE-2023-26471 is a security vulnerability in Xwiki platform rendering async macro involving XWiki Platform users may execute anything with superadmin right through comments and async macro under CWE-284: Improper Access Control.
Which Xwiki platform rendering async macro versions are affected?
Affected versions include releases prior to 13.10.10, 14.4.6, 14.9 across affected packages: org.xwiki.platform:xwiki-platform-rendering-async-macro.
What version fixes CVE-2023-26471?
Upgrading to 13.10.10, 14.4.6, 14.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is xwiki-platform-rendering-async-macro affected?
Yes, org.xwiki.platform:xwiki-platform-rendering-async-macro is affected in releases prior to 13.10.10, 14.4.6, 14.9. Upgrade your dependency to 13.10.10, 14.4.6, 14.9 or later.
What is the CVSS score of CVE-2023-26471?
CVE-2023-26471 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-2023-26471?
CVE-2023-26471 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Maven dependencies for CVE-2023-26471?
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-9cqm-5wf7-wcj7",
  "modified" : "2023-03-03T22:49:37Z",
  "published" : "2023-03-03T22:49:37Z",
  "aliases" : [ "CVE-2023-26471" ],
  "summary" : "XWiki Platform users may execute anything with superadmin right through comments and async macro",
  "details" : "### Impact\n\nComments are supposed to be executed with the right of superadmin but in restricted mode (anything dangerous is disabled) but the async macro is not taking into account the restricted mode.\n\nThis means that any user with comment right can use the async macro to make it execute any wiki content with the right of superadmin as in:\n\n{{async}}\n{{groovy}}println \"it works !\"{{/groovy}}\n{{/async}}\n\n### Patches\n\nThis has been patched in XWiki 14.9, 14.4.6, and 13.10.10.\n\n### Workarounds\n\nThe only known workaround consists in applying [the following patch](https://github.com/xwiki/xwiki-platform/commit/00532d9f1404287cf3ec3a05056640d809516006) and rebuilding and redeploying `org.xwiki.platform:xwiki-platform-rendering-async-macro`.\n\n### References\n\n* https://jira.xwiki.org/browse/XWIKI-20234\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira](http://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-async-macro"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.6-rc-1"
      }, {
        "fixed" : "13.10.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.xwiki.platform:xwiki-platform-rendering-async-macro"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "14.0"
      }, {
        "fixed" : "14.4.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.xwiki.platform:xwiki-platform-rendering-async-macro"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "14.5"
      }, {
        "fixed" : "14.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9cqm-5wf7-wcj7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-26471"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/xwiki/xwiki-platform/commit/00532d9f1404287cf3ec3a05056640d809516006"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xwiki/xwiki-platform"
  }, {
    "type" : "WEB",
    "url" : "https://jira.xwiki.org/browse/XWIKI-20234"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-03-03T22:49:37Z",
    "nvd_published_at" : "2023-03-02T19:15:00Z"
  }
}