CVE-2023-29523: Code injection in display method used in user profiles in xwiki-platform
First published: Tue Apr 18 2023(Updated: )
### Impact Any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The following syntax, to be put, e.g., in the about section of the user profile, demonstrates a proof of concept: ``` {{html wiki="true"}}~{~{~/~h~t~m~l~}~}~ ~{~{~c~a~c~h~e~}~}~{~{~g~r~o~o~v~y~}~}~p~r~i~n~t~l~n~(~1~)~{~{~/~g~r~o~o~v~y~}~}~{~{~/~c~a~c~h~e~}~}~{{/html}} ``` While it would be expected that the above code is displayed just without the `~`, in fact just "1" is displayed, followed by a lot of raw HTML code. The same vulnerability can also be exploited in other contexts where the `display` method on a document is used to display a field with wiki syntax, for example in applications created using [App Within Minutes](https://extensions.xwiki.org/xwiki/bin/view/Extension/App%20Within%20Minutes%20Application). ### Patches This has been patched in XWiki 13.10.11, 14.4.8, 14.10.2 and 15.0RC1. ### Workarounds There is no workaround apart from upgrading. ### References * https://jira.xwiki.org/browse/XWIKI-20327 * https://github.com/xwiki/xwiki-platform/commit/0d547181389f7941e53291af940966413823f61c ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xwiki Xwiki | <13.10.11 | |
| Xwiki Xwiki | >=14.0<14.4.8 | |
| Xwiki Xwiki | >=14.5<14.10.2 | |
| maven/org.xwiki.platform:xwiki-platform-oldcore | >=14.5<14.10.2 | 14.10.2 |
| maven/org.xwiki.platform:xwiki-platform-oldcore | >=14.0-rc-1<14.4.8 | 14.4.8 |
| maven/org.xwiki.platform:xwiki-platform-oldcore | >=3.3-milestone-1<13.10.11 | 13.10.11 |
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Reference Links
- https://extensions.xwiki.org/xwiki/bin/view/Extension/App%20Within%20Minutes%20Application
- https://github.com/xwiki/xwiki-platform/commit/0d547181389f7941e53291af940966413823f61c
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x764-ff8r-9hpx
- https://jira.xwiki.org/browse/XWIKI-20327
- https://nvd.nist.gov/vuln/detail/CVE-2023-29523
- https://github.com/advisories/GHSA-x764-ff8r-9hpx (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2023-29523.
What is the severity of CVE-2023-29523?
The severity of CVE-2023-29523 is critical with a severity value of 8.8.
What is the affected software for CVE-2023-29523?
The affected software for CVE-2023-29523 is XWiki Platform version up to 13.10.11, XWiki Platform version between 14.0 and 14.4.8, and XWiki Platform version between 14.5 and 14.10.2.
How can an attacker exploit CVE-2023-29523?
An attacker can exploit CVE-2023-29523 by executing arbitrary script macros, including Groovy and Python macros that allow remote code execution, by editing their own user profile.
Are there any references for CVE-2023-29523?
Yes, you can find references for CVE-2023-29523 at the following links: [Link 1](https://extensions.xwiki.org/xwiki/bin/view/Extension/App%20Within%20Minutes%20Application), [Link 2](https://github.com/xwiki/xwiki-platform/commit/0d547181389f7941e53291af940966413823f61c), [Link 3](https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x764-ff8r-9hpx).
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