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

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

JC3-CIRC TECHNICAL BULLETIN

December 22, 2011 8:15 AM ET

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.

 

 

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)[2]

[1]
References
  1. ^ Privacy and Legal Notice (www.energy.gov)
  2. ^ (2.3.1) (www.websvn.info)

Authors: JC3-CIRC

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