exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

SEC-20051202-0.txt

SEC-20051202-0.txt
Posted Dec 3, 2005
Site sec-consult.com

SEC-CONSULT Security Advisory 20051202-0 - GMX Webmail when used with Microsoft Internet Explorer lends itself to cross site scripting attacks.

tags | advisory, xss
SHA-256 | 2a6711c44f9c685e8b7cc7212fd8144d93f917d56b960b6843bd977d8b2481f7

SEC-20051202-0.txt

Change Mirror Download
==========================================================
SEC-CONSULT Security Advisory 20051202-0 GMX / MSIE XSS
==========================================================

Product: GMX Webmail V ?.? in combination with MSIE (maybe other browsers)
Remarks: no other Versions tested but very likely vulnerable

Vulnerablities: Multiple XSS/Relogin-trojan

Vendor: gmx.net
Vendor-Status: first time vendor contacted (2005.12.02)
Vendor-Patchs: ---

Object: MSIE (unknown version - 5.*+)

Exploitable:
Local: ---
Remote: YES
Type: XSS - Cross Site Scripting

============
Introduction
============

GMX-Webmail Vulnerability #1/2005

=====================
Vulnerability Details
=====================


1) XSS / Relogin Trojan
=======================

gmx.net s blacklists fail to detect script-tags in combination with
SPECIAL/META-Characters.
This leavas Webmail users using MSIE vulnerable to typical XSS /
Relogin-trojan attacks.

Vulnerable TAG/ATTRIBUTTE
=========================

P/STYLE (most likely others)

Malicious HTML-Mail:
===================================================================================================================
P-TAG / STYLE ATTRIBUTE:

---cut here---
<html><body>
<p
style="background-image:url(jav[Special/Meta-Chars]ascript:[malicious/script/relogin-trojan...])">Hola
Seniores ...</p>
</body></html>
---cut here---
===================================================================================================================

Remark:

Since the authentication tokens are stored in a second subdomain it is
not possible steal them with a single
XSS. It is very likely that a second XSS vulnerability within this
domain could be used to achieve this goal.
When users want to view HTML messages they have to confirm this by
clicking on a single link. We assume that
everybody would do so.

===============
General remarks
===============

We would like to apologize in advance for potential nonconformities
and/or known issues.

======================================
Recommended hotfixes for webmail-users
======================================

Do not use MS Internet-Explorer.

=================
Recommended fixes
=================

Do not use blacklists on tags and attributes. Whitelist
special/meta-characters.

==============
Vendor-Patches
==============

---

=======
Contact
=======

SEC-CONSULT
Austria / EUROPE
research@sec-consult.com
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close