Open redirect vulnerability in the valid_back_url function in app/controllers/application_controller.rb in Redmine before 2.6.7, 3.0.x before 3.0.5, and 3.1.x before 3.1.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted back_url parameter, as demonstrated by "@attacker.com," a different vulnerability than CVE-2014-1985.
http://www.debian.org/security/2016/dsa-3529
http://www.redmine.org/news/101
http://www.securityfocus.com/bid/78625
https://github.com/redmine/redmine/commit/032f2c9be6520d9d1a1608aa4f1d5d1f184f2472
Source: MITRE
Published: 2016-04-12
Updated: 2016-04-20
Type: NVD-CWE-Other
Base Score: 5.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Impact Score: 4
Exploitability Score: 2.8
Severity: HIGH