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xwiki/xwiki-platform · Security

XWiki Platform vulnerable to privilege escalation via async macro and IconThemeSheet from the user profile

GHSA ID
GHSA-vwr6-qp4q-2wj7
CVE ID
CVE-2023-26472
Severity
critical
Published
Updated
CVSS
9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v3
9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

Impact

One can execute any wiki content with the right of IconThemeSheet author by creating an icon theme with the following content:

}}}
{{async async="true"}}
{{groovy}}
  println("Hello from Groovy!")
{{/groovy}}
{{/async}}
{{{

Can be done by creating a new page or even through the user profile for users not having edit right.

Patches

This has been patched in XWiki 14.9, 14.4.6, and 13.10.10.

Workarounds

An easy workaround is to actually fix the bug in the page IconThemesCode.IconThemeSheet by applying the following modification: https://github.com/xwiki/xwiki-platform/commit/48caf7491595238af2b531026a614221d5d61f38#diff-2ec9d716673ee049937219cdb0a92e520f81da14ea84d144504b97ab2bdae243R45

References

https://jira.xwiki.org/browse/XWIKI-19731

For more information

If you have any questions or comments about this advisory:

CWEs

  • CWE-116 · Improper Encoding or Escaping of Output

References

Open GitHub