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…

PriorityP425medium6.1CVSS 3.0

AVNACLPRNUIRSCCLILAN

EPSS

1.49%

71.0th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
nextcloud	nextcloud_server	< 9.0.52	9.0.52
owncloud	owncloud	< 9.0.4	9.0.4

CVSS provenance

nvdv3.06.1MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

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