XSS in Nextcloud Server
CVE-2016-9459
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.
EPSS: 0.015 (71.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 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.
Affected products
- Nextcloud Nextcloud_server
- Owncloud
- N/a Nextcloud Server & Owncloud Before 9.0.52 9.0.4 — versions Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4
Weakness classification (CWE)
References
- support@hackerone.com (Patch, x_refsource_MISC, Vendor Advisory)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (Exploit, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (Patch, x_refsource_MISC, Vendor Advisory)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2016-9459?
- CVE-2016-9459 is a medium-severity vulnerability in Nextcloud Server, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 6.1/10. Published 2017-03-28.
- How severe is CVE-2016-9459?
- Medium severity. CVSS v3 base score is 6.1 out of 10.