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Date: Mon, 13 Feb 2012 09:09:38 -0700
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Henri Salo <henri@...v.fi>
Subject: Re: CVE-request: Webcalendar 1.2.4 location XSS

On 02/12/2012 02:52 AM, Henri Salo wrote:
> On Sun, Feb 12, 2012 at 10:17:46AM +0200, Henri Salo wrote:
>> On Sat, Feb 11, 2012 at 11:04:19PM -0500, Eitan Adler wrote:
>>> On Sat, Feb 11, 2012 at 11:41 AM, Henri Salo <henri@...v.fi> wrote:
>>>> This seems to be missing 2012 CVE.
>>>>
>>>> Original report: http://seclists.org/bugtraq/2012/Jan/128
>>>> Project page: https://sourceforge.net/projects/webcalendar/
>>>> Version affected: 1.2.4 (the newest)
>>>
>>> So far as I could see the newest version is 1.2.3
>>> (http://sourceforge.net/projects/webcalendar/?source=directory and
>>> http://www.k5n.us/webcalendar.php?topic=News don't list 1.2.4)
>>
>> Page http://sourceforge.net/projects/webcalendar/files/webcalendar%201.2/ lists 1.2.4 version. I have no idea why the other page doesn't list it at all. No reply to bug-report: http://sourceforge.net/tracker/?func=detail&aid=3472745&group_id=3870&atid=103870 and only thing I found strange in the report is "Version: 1.2.5" as there isn't such available. I can verify this advisory if you want.
>>
>> - Henri Salo
> 
> So if you have javascript enabled in *.sourceforge.net this PoC works in demo-page: http://webcalendar.sourceforge.net/demo/view_entry.php?id=2142&date=20120212 and I also tested this in version 1.2.4 (modified 2011-08-09) and it works as stored XSS. Changelog for 1.2.4 says:
> 
> Version 1.2.4 (08 Aug 2011)
>  - Fixed XSS vulnerability: malicious javascript in event descriptions submitted
>    by public can do bad things (create admin account, delete events, etc.)
>    when the pending event is viewed by the admin.
>  - Fixed bug: PHP warnings on search
>  - Removed PHP warnings
>  - Bug fix: undefined function date_default_timezone_set in older versions
>    of PHP.
> 
> I can't find release 1.2.5 from SF project-page nor in http://www.k5n.us/downloads.php or in news. If the code indeed has stored XSS in versions 1.2.3 and 1.2.4 there probably is more of them. SHA256 for WebCalendar-1.2.4.tar.gz is: 09dea6511bf692f08e08a1a6088e547517a11ba746dde6b5e2cd57bb0081cfee
> 
> At the moment download counts:
> 1.2.4 zip 8644
> 1.2.4 tar.gz 1838
> 
> Definitely needs a 2012 CVE-identifier.
> 
> - Henri Salo

Please use CVE-2012-0846 for this Webcalendar location variable XSS issue.

-- 
Kurt Seifried Red Hat Security Response Team (SRT)

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