Security Advisory

Back to advisories

Stored XSS in autocomplete suggestions for file comments (NC-SA-2018-008)

10th August 2018

Risk level: Low

CVSS v3 Base Score: 0 (AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:N)

CWE: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CWE-79)

Description

A missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.

Affected Software

  • Nextcloud Server < 13.0.5 (CVE-2018-3780)

Action Taken

The error has been fixed.

Resolution

It is recommended that all instances are upgraded to Nextcloud 13.0.5.

Acknowledgements

The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:

  • Joas Schilling - Nextcloud GmbH (coding@schilljs.com) - Vulnerability discovery and disclosure.

This advisory is licensed CC BY-SA 4.0.

You have javascript disabled. We tried to make sure the basics of our website work but some functionality will be missing.

This website is using cookies. By visiting you agree with our privacy policy. That's Fine