XWiki Pro Macros: excerpt-include title and content injection executes code

Summary

XWiki Remote Macros provides XWiki rendering macros that are useful when migrating content from Confluence. From 1.13 until 1.14.5, the `excerpt-include` macro does not properly escape the included page's title and executes `excerpt` content with the macro's rights. The title handling in `xwiki-pro-macros-ui/src/main/resources/Confluence/Macros/ExcerptInclude.xml` and the rendering of `excerpt` content into XWiki syntax both allow syntax injection. Any user able to edit a page, even without script or programming rights, can supply executable macro syntax in the title or `excerpt` and cause remote code execution when the page is included. This affects confidentiality, integrity and availability of the whole XWiki installation. This issue is fixed in version 1.14.5.

Remediation

1. Inventory every xwikisas xwiki-pro-macros deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://github.com/xwikisas/xwiki-pro-macros/commit/151d4fccb62f6ec5f3c972e837869454677ab1ca
• Referencehttps://github.com/xwikisas/xwiki-pro-macros/releases/tag/xwiki-pro-macros-1.14.5
• Referencehttps://github.com/xwikisas/xwiki-pro-macros/security/advisories/GHSA-w56x-9778-rppx