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GHSA-859x-p6jp-rc2w
No affected components available
Impact
It's possible to execute a script with the right of another user (provided the target user does not have programming right).
For example, the following:
{{context document="xwiki:XWiki.userwithscriptright" transformationContext="document"}}{{velocity}}Hello from Velocity!{{/velocity}}{{/context}}
written by a user not having script right (for example in the user's profile) should produce an error (the user is not allowed to write scripts). However, because of the vulnerability, if the author of the document "xwiki:XWiki.userwithscriptright" has script right (but not programming right) the script will be executed with as if it was written by the target user.
Patches
The problem has been patched in XWiki 14.8RC1, 14.4.5 and 13.10.10.
Workarounds
There's no workaround for this issue.
References
https://jira.xwiki.org/browse/XWIKI-19856
For more information
If you have any questions or comments about this advisory:
- Open an issue in JIRA
- Email us at security ML
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 impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely 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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