Nextcloud server 11.0.3DOM XSS vulnerability in search dialogue
Reflected XSS in error pages
Limitation of app specific password scope can be bypassed
Stored XSS in Gallery application
Share tokens for public calendars disclosed
DOM XSS vulnerability in search dialogue (NC-SA-2017-007)
8th May 2017
Risk level: Low
CVSS v3 Base Score: 2.6 (AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N)
HackerOne report: 213227
Inadequate escaping lead to XSS vulnerability in the search module. To be exploitable an user has to write or paste malicious content into the search dialogue.
- Nextcloud Server < 11.0.3 (CVE-2017-0890)
The content is now properly escaped, furthermore for Nextcloud 12 we have hardened jQuery to prevent such CSP bypasses.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- Ahsan Khan - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.