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GHSA-gjmq-x5x7-wc36
No affected components available
Impact
It's possible to store a JavaScript which will be executed by anyone viewing the deleted attachments index with an attachment containing javascript in its name.
For example, attachment a file with name ><img src=1 onerror=alert(1)>.jpg will execute the alert.
Patches
This issue has been patched in XWiki 13.10.6 and 14.3.
Workarounds
It is possible to modify fix the vulnerability by editing the wiki page XWiki.DeletedAttachments with the object editor, open the JavaScriptExtension object and apply on the content the changes that can be found on the commit https://github.com/xwiki/xwiki-platform/commit/6705b0cd0289d1c90ed354bd4ecc1508c4b25745.
References
- https://jira.xwiki.org/browse/XWIKI-19613
For more information
If you have any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
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. The attacker needs the user to perform some action, like clicking a link. 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 low impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is high. The vulnerability is very likely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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