Nextcloud CVE-2017-0890 Cross Site Scripting Vulnerability

Bugtraq ID:	98408
Class:	Input Validation Error
CVE:	CVE-2017-0890
Remote:	Yes
Local:	No
Published:	May 08 2017 12:00AM
Updated:	May 23 2017 04:25PM
Credit:	Ahsan Khan
Vulnerable:	Nextcloud Nextcloud 10.0.1 Nextcloud Nextcloud 9.0.52 Nextcloud Nextcloud 9.0.51 Nextcloud Nextcloud 9.0.54 Nextcloud Nextcloud 10.0.0
Not Vulnerable:	Nextcloud Nextcloud 11.0.3

Nextcloud CVE-2017-0890 Cross Site Scripting Vulnerability

Nextcloud is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and launch other attacks.

Nextcloud CVE-2017-0890 Cross Site Scripting Vulnerability

To exploit this issue an attacker must entice an unsuspecting victim to open a malicious URI.

Nextcloud CVE-2017-0890 Cross Site Scripting Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

Nextcloud CVE-2017-0890 Cross Site Scripting Vulnerability

References:

• Nextcloud Homepage (Nextcloud)
  
• DOM XSS vulnerability in search dialogue (NC-SA-2017-007) (Nextcloud)