CVE-2016-9459

MEDIUM

Nextcloud Server < 9.0.52 - Error Information Exposure

Title source: rule

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.

References (8)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/97284

[Issue Tracking, Patch, Third Party Advisory] https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070

View Patch ZIP pw:eip

[Issue Tracking, Patch, Third Party Advisory] https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335

[Issue Tracking, Patch, Third Party Advisory] https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1

View Patch ZIP pw:eip

[Issue Tracking, Patch, Third Party Advisory] https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc

[Exploit, Third Party Advisory] https://hackerone.com/reports/146278

[Patch, Vendor Advisory] https://nextcloud.com/security/advisory/?id=nc-sa-2016-002

[Patch, Vendor Advisory] https://owncloud.org/security/advisory?id=oc-sa-2016-012

Scores

CVSS v3 6.1

EPSS 0.0049

EPSS Percentile 65.4%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Classification

CWE

CWE-209 CWE-79

Status draft

Affected Products (2)

nextcloud/nextcloud_server < 9.0.52

owncloud/owncloud < 9.0.4

Timeline

Published Mar 28, 2017

Tracked Since Feb 18, 2026