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U-144:Juniper Secure Access Input Validation Flaw Permits Cross-Site Scripting Attacks

April 10, 2012 - 7:30am

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PROBLEM:

A vulnerability was reported in Juniper Secure Access/Instant Virtual Extranet (IVE). A remote user can conduct cross-site scripting attacks.

PLATFORM:

Version(s): prior to 7.0R9 and 7.1R

ABSTRACT:

The VPN management interface does not properly filter HTML code from user-supplied input before displaying the input. A remote user can cause arbitrary scripting code to be executed by the target user's browser.

reference LINKS:

Vendor URL
SecurityTracker Alert ID: 1026893

IMPACT ASSESSMENT:

High

Discussion:

The code will originate from the interface and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the VPN management interface, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Impact:

Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information

Solution:

The vendor has issued a fix (7.0R9, 7.1R).

 

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