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GHSA-p5f8-qf24-24cj

HighCVSS 8.3 / 10
Published Dec 19, 2023·Last modified Dec 21, 2023
Affected Components(0)

No affected components available

Description

Impact

It's possible to execute a Velocity script without script right through the document tree.

To reproduce:

  • As a user without script right, create a document, e.g., named Nasty Title
  • Set the document's title to $request.requestURI
  • Click "Save & View"
  • Reload the page in the browser

The navigation panel displays a document named with the current URL, showing that the Velocity code has been executed even though the user doesn't have script right.

Patches

This has been patched in XWiki 14.10.7 and 15.2RC1.

Workarounds

A possible workaround is to:

  • modify the page XWiki.DocumentTreeMacros
  • search for the code #set ($discard = $translatedDocument.setTitle($translatedDocument.title))
  • modify it into #set ($discard = $translatedDocument.setcomment(''))

References

  • https://jira.xwiki.org/browse/XWIKI-20625
  • https://github.com/xwiki/xwiki-platform/commit/41d7dca2d30084966ca6a7ee537f39ee8354a7e3

For more information

If you have any questions or comments about this advisory:

Risk Scores
Base Score
8.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. 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 low impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.

Threat Intelligence
7.6

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within 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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High severity
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