Login Request a demo
Medium severity · published Mar 28, 2017
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
6.1
CVSS
1.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 9.0.52 · source: NVD
OW
Owncloud · Owncloud
before 9.0.4 · source: NVD
Affected product
NS
Nextcloud Server
Nextcloud
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9459
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9459
Third Party Advisory
http://www.securityfocus.com/bid/97284
Issue Tracking
https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070
Issue Tracking
https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335
Issue Tracking
https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1
Issue Tracking
https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc
Exploit
https://hackerone.com/reports/146278
More from Nextcloud Server
9.8
CVE-2023-49792
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform
9.8
CVE-2023-48306
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform
9.8
CVE-2021-32802
Nextcloud server is an open source, self hosted personal cloud
9.8
CVE-2021-32726
Nextcloud Server is a Nextcloud package that handles data storage
9.8
CVE-2021-22915
Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations