DNN (DotNetNuke) __dnnVariable Parameter XSS

This script is Copyright (C) 2013-2017 Tenable Network Security, Inc.

Synopsis :

The remote web server contains an ASP.NET application that is affected
by a cross-site scripting vulnerability.

Description :

The version of DNN installed on the remote host is affected by a
cross-site scripting vulnerability due to a failure to properly
sanitize user-supplied input to the ' __dnnVariable' parameter. An
unauthenticated, remote attacker can exploit this, via a specially
crafted request, to inject arbitrary HTML and script code into a
user's browser to be executed within the security context of the
affected site.

Note that the application is reportedly also affected by an additional
cross-site scripting issue as well as a redirect error that can lead
to phishing attacks; however, Nessus has not tested for these
additional issues.

See also :


Solution :

Upgrade to DNN version 6.2.9 / 7.1.1 or later.

Risk factor :

Medium / CVSS Base Score : 4.3
CVSS Temporal Score : 3.6
Public Exploit Available : true

Family: CGI abuses : XSS

Nessus Plugin ID: 69400 ()

Bugtraq ID: 61770

CVE ID: CVE-2013-4649

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