bugtraq - AccessDiver V4.301 Buffer Overflow

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Date: Sat, 26 Dec 2015 06:06:25 GMT
From: apparitionsec@...il.com
To: bugtraq@...urityfocus.com
Subject: AccessDiver V4.301 Buffer Overflow

[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source:  http://hyp3rlinx.altervista.org/advisories/ACCESSDIVER-BUFFER-OVERFLOW.txt



Vendor:
==============
M. Jean Fages
www.accessdiver.com
circa 1998-2006


Product:
=============================
AccessDiver V4.301 build 5888


AccessDiver is a security tester for Web pages. It has got a set of tools which
will verify the robustness of you accounts and directories. You will know if your
customers, your users and you can use safely your web site.


Vulnerability Type:
===================
Buffer Overflow



CVE Reference:
==============
N/A



Vulnerability Details:
=====================

AccessDiver is vulnerable to multiple buffer overflows, two vectors are described below.

1) buffer overflow @ 2073 bytes in URL field for Server / IP address and will overwrite NSEH and SEH exception handlers.

EAX 00000000
ECX 52525252
EDX 7C9037D8 ntdll.7C9037D8
EBX 00000000
ESP 0012EA08
EBP 0012EA28
ESI 00000000
EDI 00000000
EIP 52525252                 <----------------- BOOM
C 0  ES 0023 32bit 0(FFFFFFFF)
P 1  CS 001B 32bit 0(FFFFFFFF)
A 0  SS 0023 32bit 0(FFFFFFFF)
Z 1  DS 0023 32bit 0(FFFFFFFF)
S 0  FS 003B 32bit 7FFDF000(FFF)
T 0  GS 0000 NULL
D 0
O 0  LastErr ERROR_SUCCESS (00000000)
EFL 00010246 (NO,NB,E,BE,NS,PE,GE,LE)
ST0 empty
ST1 empty
ST2 empty
ST3 empty
ST4 empty
ST5 empty
ST6 empty
ST7 empty
               3 2 1 0      E S P U O Z D I
FST 4000  Cond 1 0 0 0  Err 0 0 0 0 0 0 0 0  (EQ)
FCW 1272  Prec NEAR,53  Mask    1 1 0 0 1 0



2) Buffer overflow  when loading a malicious "Exploit zone file" text file containing 2080 bytes,
load text file from "Weak History" Menu choose Import "from File" choose exploit text file and BOOM!


EAX 00000000
ECX 52525242
EDX 7702B4AD ntdll.7702B4AD
EBX 00000000
ESP 0018E940
EBP 0018E960
ESI 00000000
EDI 00000000
EIP 52525242                      <----------------- KABOOM
C 0  ES 002B 32bit 0(FFFFFFFF)
P 1  CS 0023 32bit 0(FFFFFFFF)
A 0  SS 002B 32bit 0(FFFFFFFF)
Z 1  DS 002B 32bit 0(FFFFFFFF)
S 0  FS 0053 32bit 7EFDD000(FFF)
T 0  GS 002B 32bit 0(FFFFFFFF)
D 0
O 0  LastErr ERROR_SUCCESS (00000000)
EFL 00210246 (NO,NB,E,BE,NS,PE,GE,LE)
ST0 empty g
ST1 empty g
ST2 empty g
ST3 empty g
ST4 empty g
ST5 empty g
ST6 empty g
ST7 empty g
               3 2 1 0      E S P U O Z D I
FST 4000  Cond 1 0 0 0  Err 0 0 0 0 0 0 0 0  (EQ)
FCW 1372  Prec NEAR,64  Mask    1 1 0 0 1 0


Windbg dump...

(2abc.2330): 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=52525252 edx=7702b4ad esi=00000000 edi=00000000
eip=52525252 esp=0018e7f4 ebp=0018e814 iopl=0         nv up ei pl zr na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
52525252 ??              ???



Disclosure Timeline:
=====================================
Vendor Notification:  NA
December 26, 2015 : Public Disclosure




Exploitation Technique:
=======================
Local



Severity Level:
================
Med



===========================================================

[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author.
The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere.

by hyp3rlinx