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Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in xwiki-platform-web-templates

Critical
tmortagne published GHSA-hg5x-3w3x-7g96 Apr 18, 2023

Package

maven xwiki-platform-web-templates (Maven)

Affected versions

>= 1.0B1

Patched versions

15.0-rc-1, 14.10.1, 14.4.8, 13.10.11

Description

Impact

Any user with edit rights on a page (e.g., it's own user page), can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the information loaded from attachments in imported.vm, importinline.vm, and packagelist.vm. This page is installed by default.

Reproduction steps are described in https://jira.xwiki.org/browse/XWIKI-20267

Patches

The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.1, 14.4.8, and 13.10.11.

Workarounds

The issue can be fixed by applying this patch on imported.vm, importinline.vm, and packagelist.vm.

References

For more information

If you have any questions or comments about this advisory:

Severity

Critical
9.9
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

CVE ID

CVE-2023-29512

Weaknesses