full-disclosure - [ISR] - Internet Security Systems, RealSecure Desktop and BlackICE PC Protection Buffer Overflow

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Date: Fri Apr  8 20:23:37 2005
From: famato at infobyte.com.ar (Francisco Amato)
Subject: [ISR] - Internet Security Systems,
	RealSecure Desktop and BlackICE PC Protection Buffer Overflow

||
|| [ISR]
|| Infobyte Security Research
|| www.infobyte.com.ar
|| 04.08.2005
||

.:: SUMMARY

ISS - Internet Security Systems, RealSecure Desktop and BlackICE PC
Protection
Buffer Overflow

Version: BlackIce 7.0.322, It is suspected that all previous versions of
BlackIce
are vulnerable.

.:: BACKGROUND

BlackICE products provide Intrusion Detection, personal firewall, and
application protection.

    http://www.iss.com

.:: DESCRIPTION

A local buffer overflow vulnerability affect RealSecure Desktop and BlackICE
PC Protection
This issue is due to a failure of the application to securely copy
user-supplied data
into field name of rules that user create.

Buffer used: A * 445

Information of Registers:
EAX 41414141
ECX 41414141
EDX 41414175
EBX 00000001
ESP 0012EC5C
EBP 0012EF00
ESI 0048A8E0 blackice.0048A8E0
EDI 00F29704
EIP 004055AF blackice.004055AF
C 0  ES 0023 32bit 0(FFFFFFFF)
P 1  CS 001B 32bit 0(FFFFFFFF)
A 0  SS 0023 32bit 0(FFFFFFFF)
Z 0  DS 0023 32bit 0(FFFFFFFF)
S 0  FS 0038 32bit 7FFDE000(FFF)
T 0  GS 0000 NULL
D 0
O 0  LastErr ERROR_ALREADY_EXISTS (000000B7)
EFL 00010206 (NO,NB,NE,A,NS,PE,GE,G)
ST0 empty -NAN FFFF FFD0D0C8 FFD0D0C8
ST1 empty -??? FFFF 00000000 00000000
ST2 empty -??? FFFF 00FE00CF 00CF00C7
ST3 empty -??? FFFF 00FE00CF 00CF00C7
ST4 empty -NAN FFFF FFD0D0C8 FFD0D0C8
ST5 empty -??? FFFF 00FF00D0 00D000C8
ST6 empty -??? FFFF 00000000 00000000
ST7 empty -??? FFFF 00800080 00800080
               3 2 1 0      E S P U O Z D I
FST 0000  Cond 0 0 0 0  Err 0 0 0 0 0 0 0 0  (GT)
FCW 027F  Prec NEAR,53  Mask    1 1 1 1 1 1

.:: EXTRA

We did not find any way to gain additional privileges

.:: DISCLOSURE TIMELINE

03/22/2005  Initial vendor notification
03/25/2005  Initial vendor response
04/08/2005  Public disclosure

.:: CREDIT

Francisco Amato is credited with discovering this vulnerability.
famato][at][infobyte][dot][com][dot][ar

.:: LEGAL NOTICES

Copyright (c) 2005 by [ISR] Infobyte Security Research.
Permission to redistribute this alert electronically is granted as long as
it is not
edited in any way unless authorized by Infobyte Security Research Response.
Reprinting the whole or part of this alert in any medium other than
electronically
requires permission from infobyte com ar

Disclaimer
The information in the advisory is believed to be accurate at the time of
publishing
based on currently available information. Use of the information constitutes
acceptance
for use in an AS IS condition. There are no warranties with regard to this
information.
Neither the author nor the publisher accepts any liability for any direct,
indirect, or
consequential loss or damage arising from use of, or reliance on, this
information.