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Date: Tue, 21 Dec 2010 19:53:51 -0500 (EST)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: Earl Hood <earl@...lhood.com>, non customers <non-customers@...ramail.com>,
        "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE Request -- MHonArc: Improper escaping of
 certain HTML sequences (XSS)

Please use CVE-2010-4524

Thanks.

-- 
    JB


----- Original Message -----
> Hello Steve, vendors,
> 
> MHonArc, a Perl mail-to-HTML converter, failed to
> properly escape certain HTML sequences. A remote
> attacker could provide a specially-crafted email
> message and trick the local user to convert it
> into HTML format. Subsequent preview of such
> message might potentially execute arbitrary HTML
> or scripting code (XSS).
> 
> References:
> [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607693
> [2] https://bugzilla.redhat.com/show_bug.cgi?id=664718
> 
> Public PoC:
> [3]
> http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=elsatest.mbox;att=1;bug=607693
> 
> Further issue note:
> -------------------
> MHonArc properly escapes for example:
> 
> <script>alert("elsa");</script> =>
> 
> &lt;script&gt;alert(&quot;elsa&quot;);&lt;/script&gt;
> 
> But fails to do the same example for a string in the form of:
> 
> <scr<body>ipt>alert("elsa");</scr<body>ipt> =>
> 
> <script>alert("elsa");</script>
> 
> Affected versions: Issue confirmed in latest MHonArc-2.6.16 version
> 
> Could you allocate a CVE id for this issue?
> 
> Thanks && Regards, Jan.
> --
> Jan iankko Lieskovsky / Red Hat Security Response Team

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