CVE-2016-9459
Publication date 28 March 2017
Last updated 25 August 2025
Ubuntu priority
Description
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| nextcloud | ||
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| owncloud | ||
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
6.1 · Medium
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
Other references
- https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070
- https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335
- https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1
- https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc
- https://hackerone.com/reports/146278
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-002
- https://owncloud.org/security/advisory?id=oc-sa-2016-012
- https://www.cve.org/CVERecord?id=CVE-2016-9459