Bug 1377396 (CVE-2016-7419, oC-SA-2016-011)

Summary: CVE-2016-7419 owncloud: Stored XSS in gallery application
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ignatenko, james.hogarth, shawn, sheldon.corey
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: owncloud 9.0.52 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-09-19 15:33:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1377397, 1377398    
Bug Blocks:    

Description Andrej Nemec 2016-09-19 14:54:36 UTC 
Due to a recent migration of the Gallery app to the new sharing endpoint a parameter changed from an integer to a string value. This value wasn't sanitized before and was thus now vulnerable to a Cross-Site-Scripting attack.

To exploit this vulnerability an authenticated attacker has to share a folder with someone else, get them to open the shared folder in the Gallery app and open the sharing window there.

Since ownCloud employs a strict Content-Security-Policy this vulnerability is only exploitable in browsers not supporting Content-Security-Policy.

External References:

https://owncloud.org/security/advisory/?id=oc-sa-2016-011

Upstream fix:

https://github.com/owncloud/gallery/commit/6933d27afe518967bd1b60e6a7eacd88288929fc

References:

https://hackerone.com/reports/145355
Comment 1 Andrej Nemec 2016-09-19 14:55:21 UTC 
Created owncloud tracking bugs for this issue:

Affects: fedora-all [bug 1377397]
Affects: epel-all [bug 1377398]
Comment 2 James Hogarth 2016-09-19 15:33:48 UTC 
As per the tracking bugs, the current packages are at 9.0.4 and not affected by this.