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GHSA-36fm-j33w-c25f

CriticalCVSS 9.9 / 10
Published May 11, 2023·Last modified Nov 8, 2023
Affected Components(0)

No affected components available

Description

Impact

It's possible for a user to execute anything with the right of the author of the XWiki.ClassSheet document.

Steps to Reproduce:

  1. Edit your user profile with the object editor and add an object of type DocumentSheetBinding with value Default Class Sheet
  2. Edit your user profile with the wiki editor and add the syntax {{async}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}
  3. Click "Save & View"

Expected result:

An error is displayed as the user doesn't have the right to execute the Groovy macro.

Actual result:

The text "Hello from groovy!" is displayed at the top of the document.

Patches

This has been patched in XWiki 15.0-rc-1 and 14.10.4.

Workarounds

There are no known workarounds for it.

References

https://jira.xwiki.org/browse/XWIKI-20566 https://github.com/xwiki/xwiki-platform/commit/de72760d4a3e1e9be64a10660a0c19e9534e2ec4

For more information

If you have any questions or comments about this advisory:

Risk Scores
Base Score
9.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
9.1

Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.

EPSS
0.78%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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