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U-067:WebSVN Input Validation Flaw in getLog() Permits Cross-Site Scripting Attacks

December 22, 2011 - 8:15am

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PROBLEM:

WebSVN Input Validation Flaw in getLog() Permits Cross-Site Scripting Attacks

PLATFORM:

WebSVN 2.3.0 and prior versions

ABSTRACT:

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the WebSVN software, 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.

referenceĀ  LINKS:

SecurityTracker Alert ID: 1026438
WebSVN version update
WebSVN News

IMPACT ASSESSMENT:

Medium

Discussion:

The getLog() function does not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the WebSVN software 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.

Impact:

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the WebSVN software, 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.

Solution:

The vendor has issued a fix (2.3.1)

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