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GHSA-jwr7-992g-68mh
No affected components available
Summary
Various preferences messages are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM.
Details
The innerHtml of the label div is set to the textContent of the label, essentially unsanitizing the system messages:
https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/407052e7069bdeae927d6f1a2a1c9a45b473bf9a/resources/skins.citizen.preferences/addPortlet.polyfill.js#L18
PoC
- Edit
citizen-feature-custom-font-size-name(or any other message displayed in a heading in the preferences menu) to<img src="" onerror="alert('citizen-feature-custom-font-size-name')">(script tags don't work here due to the way the HTML is inserted) - Open the preferences menu
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. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high 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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