Security
Headlines
HeadlinesLatestCVEs

Headline

GHSA-gh64-qxh5-4m33: org.xwiki.platform:xwiki-platform-oldcore may leak data through deleted and re-created documents

Impact

When a document has been deleted and re-created, it is possible for users with view right on the re-created document but not on the deleted document to view the contents of the deleted document. Such a situation might arise when rights were added to the deleted document. This can be exploited through the diff feature and, partially, through the REST API by using versions such as deleted:1 (where the number counts the deletions in the wiki and is thus guessable). Given sufficient rights, the attacker can also re-create the deleted document, thus extending the scope to any deleted document as long as the attacker has edit right in the location of the deleted document.

Patches

This vulnerability has been patched in XWiki 14.10.8 and 15.3 RC1 by properly checking rights when deleted revisions of a document are accessed.

Workarounds

The only workaround is to regularly clean deleted documents to minimize the potential exposure. Extra care should be taken when deleting sensitive documents that are protected individually (and not, e.g., by being placed in a protected space) or deleting a protected space as a whole.

References

  • https://jira.xwiki.org/browse/XWIKI-20685 (root cause)
  • https://jira.xwiki.org/browse/XWIKI-20817 (exploitation via the diff feature)
  • https://jira.xwiki.org/browse/XWIKI-20684 (exploitation via the REST API)
  • https://github.com/xwiki/xwiki-platform/commit/f471f2a392aeeb9e51d59fdfe1d76fccf532523f
ghsa
#vulnerability#git#java#perl#jira#maven

Skip to content

    • Actions

      Automate any workflow

    • Packages

      Host and manage packages

    • Security

      Find and fix vulnerabilities

    • Codespaces

      Instant dev environments

    • Copilot

      Write better code with AI

    • Code review

      Manage code changes

    • Issues

      Plan and track work

    • Discussions

      Collaborate outside of code

    • GitHub Sponsors

      Fund open source developers

*   The ReadME Project
    
    GitHub community articles
  • Pricing
  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2023-37911

org.xwiki.platform:xwiki-platform-oldcore may leak data through deleted and re-created documents

Moderate severity GitHub Reviewed Published Oct 25, 2023 in xwiki/xwiki-platform • Updated Oct 25, 2023

Package

maven org.xwiki.platform:xwiki-platform-oldcore (Maven)

Affected versions

>= 9.4-rc-1, < 14.10.8

>= 15.0-rc-1, < 15.3-rc-1

Patched versions

14.10.8

15.3-rc-1

Description

Published to the GitHub Advisory Database

Oct 25, 2023

Last updated

Oct 25, 2023

Related news

CVE-2023-37911: XWIKI-20685: Check access on the revision provider in the script API · xwiki/xwiki-platform@f471f2a

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 9.4-rc-1 and prior to versions 14.10.8 and 15.3-rc-1, when a document has been deleted and re-created, it is possible for users with view right on the re-created document but not on the deleted document to view the contents of the deleted document. Such a situation might arise when rights were added to the deleted document. This can be exploited through the diff feature and, partially, through the REST API by using versions such as `deleted:1` (where the number counts the deletions in the wiki and is thus guessable). Given sufficient rights, the attacker can also re-create the deleted document, thus extending the scope to any deleted document as long as the attacker has edit right in the location of the deleted document. This vulnerability has been patched in XWiki 14.10.8 and 15.3 RC1 by properly checking rights when deleted revisions of a document are accessed....