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GHSA-vgwr-23fq-pr7g
org.xwiki.platform/xwiki-platform-webjars-apiorg.xwiki.platform/xwiki-platform-webjars-apiorg.xwiki.platform/xwiki-platform-webjars-apiImpact
A potential path traversal vulnerability allow an attacker who manages to get a malicious WebJar extension installed on the wiki to write arbitrary files. While the consequences could be severe like overriding configuration files and setting the superadmin password, the attack first requires that the attacker already has admin access to at least a subwiki to be able to install a malicious extension. Further, the attacker needs to publish a malicious extension in an extension repository that is configured in the instance.
Patches
This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, and 18.0.0RC1.
Workarounds
XWiki is not aware of any workarounds except for being careful whom developers grant script and admin rights to.
Resources
- https://jira.xwiki.org/browse/XWIKI-23902
- https://github.com/xwiki/xwiki-platform/commit/9f747fcd3200259a1de51957d3f5f6acc8e3816c
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 high-level or administrative privileges. No user interaction is needed for the attacker to exploit this vulnerability.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
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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