Vulnerability CVE-2013-4200
Published: 2014-01-21

Description:
The isURLInPortal method in the URLTool class in in_portal.py in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 treats URLs starting with a space as a relative URL, which allows remote attackers to bypass the allow_external_login_sites filtering property, redirect users to arbitrary web sites, and conduct phishing attacks via a space before a URL in the "next" parameter to acl_users/credentials_cookie_auth/require_login.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Plone CMS URL Redirection Vulnerability
Alexandre Herzog...
17.01.2014

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
4.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Plone -> Plone 

 References:
http://plone.org/products/plone-hotfix/releases/20130618
http://plone.org/products/plone/security/advisories/20130618-announcement
http://www.openwall.com/lists/oss-security/2013/08/01/2
http://www.securityfocus.com/archive/1/530787/100/0/threaded
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4200
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