REDAXO: Unwhitelisted ORDER BY Column in rex_list Allows Authenticated Column Enumeration

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

REDAXO is a PHP-based content management system. Prior to 5.21.2, rex_list::getSortColumn() in redaxo/src/core/lib/list.php accepts the sort request parameter without checking whether setColumnSortable() registered the requested column. An authenticated backend user can make prepareQuery() add an escaped but unauthorized ORDER BY identifier, allowing error-based enumeration of columns in joined tables and ordering by unselected sensitive fields such as rex_user.password. This issue is fixed in version 5.21.2.

[ Fixes ]Fixes and patches

• redaxo/source 5.21.2Fixed version · GitHub Advisories · composer package redaxo/source: upgrade to 5.21.2 or later (affected <= 5.21.1)
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Packages ]Affected open-source packages

• redaxo/source composerAffected <= 5.21.1 · fixed in 5.21.2 · GHSA-4f5f-j737-pm58

[ References ]References

• github.com/redaxo/core/commit/c44ba5206a28427984100c994010f2aaa6703efdPatch
• github.com/redaxo/core/pull/6580Issue TrackingPatch
• github.com/redaxo/core/releases/tag/5.21.2Release Notes
• github.com/redaxo/core/security/advisories/GHSA-4f5f-j737-pm58ExploitVendor Advisory