CWE
79
Advisory Published
Advisory Published
Updated

CVE-2023-45134: XWiki Platform XSS vulnerability from account in the create page form via template provider

First published: Wed Oct 25 2023(Updated: )

### Impact An attacker can create a template provider on any document that is part of the wiki (could be the attacker's user profile) that contains malicious code. This code is executed when this template provider is selected during document creation which can be triggered by sending the user to a URL. For the attacker, the only requirement is to have an account as by default the own user profile is editable. This allows an attacker to execute arbitrary actions with the rights of the user opening the malicious link. Depending on the rights of the user, this may allow remote code execution and full read and write access to the whole XWiki installation. For reproduction, the following steps can be used: 1. As a simple user with no script right, edit the user profile with the object editor and add an object of type "Template Provider Class". Set the name to "My Template", set template to any page on the wiki. In "Creation Restrictions", enter `<img onerror="alert(1)" src="https://www.example.com"`. Accept the suggestion to add this string in the dropdown. Click "Save & View" 2. As any user with edit right, open `<xwiki-host>/xwiki/bin/create/Main/WebHome?parent=&templateprovider=XWiki.<username>&name=foo&spaceReference=Bar`, where `<xwiki-host>` is the URL of your XWiki installation and `<username>` is the username of the attacker. If an alert is displayed, the installation is vulnerable. ### Patches This has been patched in XWiki 14.10.12 and 15.5RC1 by adding the appropriate escaping. ### Workarounds The vulnerable template file createinline.vm is part of XWiki's WAR and can be patched by manually applying the [changes from the fix](https://github.com/xwiki/xwiki-platform/commit/ba56fda175156dd35035f2b8c86cbd8ef1f90c2e#diff-c222148bddebe4ff7629350f4053b618504a4ab172e697938c8fddf7c1fc6bc8). ### References * https://github.com/xwiki/xwiki-platform/commit/ba56fda175156dd35035f2b8c86cbd8ef1f90c2e * https://jira.xwiki.org/browse/XWIKI-20962

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Xwiki Xwiki>=3.1.1<13.4
Xwiki Xwiki>=14.10<14.10.2
Xwiki Xwiki=2.4-milestone2
Xwiki Xwiki=2.5-milestone2
Xwiki Xwiki=3.0
Xwiki Xwiki=3.0-milestone_2
Xwiki Xwiki=3.0-milestone1
Xwiki Xwiki=3.0-milestone2
Xwiki Xwiki=3.0-milestone3
Xwiki Xwiki=3.0-rc1
Xwiki Xwiki=3.0.1
Xwiki Xwiki=3.1
Xwiki Xwiki=3.1-milestone1
Xwiki Xwiki=3.1-milestone2
maven/org.xwiki.platform:xwiki-platform-web>=3.1-milestone-1<13.4-rc-1
13.4-rc-1
maven/org.xwiki.platform:xwiki-web-standard>=2.4-milestone-2<3.1-milestone-1
3.1-milestone-1
maven/org.xwiki.platform:xwiki-platform-web-templates>=15.0-rc-1<15.5-rc-1
15.5-rc-1
maven/org.xwiki.platform:xwiki-platform-web-templates<14.10.12
14.10.12

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Frequently Asked Questions

  • What is the impact of CVE-2023-45134?

    An attacker can create a template provider on any document that is part of the wiki (could be the attacker's user profile) that contains malicious code.

  • How can an attacker exploit CVE-2023-45134?

    The code in the template provider is executed when the provider is selected during document creation.

  • What is the severity rating of CVE-2023-45134?

    The severity rating of CVE-2023-45134 is critical with a score of 9.1.

  • Which software versions are affected by CVE-2023-45134?

    Versions 3.1-milestone-1 to 13.4-rc-1 of org.xwiki.platform:xwiki-platform-web, org.xwiki.platform:xwiki-web-standard, and org.xwiki.platform:xwiki-platform-web-templates are affected.

  • How to fix CVE-2023-45134?

    Upgrade to version 15.5-rc-1 of org.xwiki.platform:xwiki-platform-web-templates or version 14.10.12 of org.xwiki.platform:xwiki-platform-web-templates.

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