oss-security - CVE Request -- Data-FormValidator -- Reports invalid field as valid when untaint_all

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <4DF4D1FD.7070604@redhat.com>
Date: Sun, 12 Jun 2011 16:49:33 +0200
From: Jan Lieskovsky <jlieskov@...hat.com>
To: "Steven M. Christey" <coley@...us.mitre.org>
CC: oss-security@...ts.openwall.com, Damyan Ivanov <dmn@...ian.org>,
        Mark Stosberg <mark@...mersault.com>, 629511@...s.debian.org,
        Iain Arnell <iarnell@...il.com>,
        Marcela Maslanova <mmaslano@...hat.com>
Subject: CVE Request -- Data-FormValidator -- Reports invalid field as valid
 when untaint_all_constraints used

Hello, Josh, Steve, vendors,

   It was found that perl-Data-FormValidator, a HTML form user input
validator, used to treat certain invalid fields as valid, when the
untaint_all_constraints directive was used (default for majority of
Data-FormValidator routines). A remote attacker could use this flaw to
bypass perl Taint mode protection mechanism via specially-crafted input
provided to the HTML form.

Note: Hopefully Damyan, Mark can clarify here, if valid data from
       Data-FormValidator are automatically marked as untainted for
       perl Taint mode or not. If there still is perl Taint mode
       protection check present, even on valid Data-FormValidator
       data and it couldn't happen, that tainted data would be passed
       further to the script processing, then this is not a security
       issue.

References:
[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629511
[2] https://rt.cpan.org/Public/Bug/Display.html?id=61792
[3] https://bugzilla.redhat.com/show_bug.cgi?id=712694

Could you allocate a CVE id for this?

Thank you & Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.