exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Microsoft Windows Dolby Audio X2 Service Privilege Escalation

Microsoft Windows Dolby Audio X2 Service Privilege Escalation
Posted Apr 24, 2017
Authored by Google Security Research, forshaw

The DAX2API service installed as part of the Realtek Audio Driver on Windows 10 is vulnerable to a privilege escalation vulnerability which allows a normal user to get arbitrary system privileges.

tags | advisory, arbitrary
systems | windows
advisories | CVE-2017-7293
SHA-256 | 648ba1e2f3e829a53ac3a224f73958fcb62fd2097a728a0530b0740b66b425dc

Microsoft Windows Dolby Audio X2 Service Privilege Escalation

Change Mirror Download
Windows: Dolby Audio X2 Service EoP 

CVE-2017-7293


Windows: Dolby Audio X2 Service Elevation of Privilege
Platform: Windows 10 + Realtek Audio Driver version 6.0.1.7898 (on a Lenovo P50). Version of the service binary 0.7.2.61 built on 7/18/2016.
Class: Elevation of Privilege

Summary:
The DAX2API service installed as part of the Realtek Audio Driver on Windows 10 is vulnerable to a privilege escalation vulnerability which allows a normal user to get arbitrary system privileges.

Description:

The DAX2API service is a DCOM service written in .NET running at system privileges. The use of .NET for DCOM is inherently unsafe and should not be used. Thereas public exploit code to elevate privileges on arbitrary services available at <a href="https://github.com/tyranid/ExploitDotNetDCOM" title="" class="" rel="nofollow">https://github.com/tyranid/ExploitDotNetDCOM</a>.

Microsoft recommends moving from using DCOM to WCF for .NET services of different privilege levels. See <a href="https://blogs.technet.microsoft.com/srd/2014/10/14/more-details-about-cve-2014-4073-elevation-of-privilege-vulnerability/" title="" class="" rel="nofollow">https://blogs.technet.microsoft.com/srd/2014/10/14/more-details-about-cve-2014-4073-elevation-of-privilege-vulnerability/</a> for more information.

Proof of Concept:

To demonstrate the vulnerability download the project <a href="https://github.com/tyranid/ExploitDotNetDCOM" title="" class="" rel="nofollow">https://github.com/tyranid/ExploitDotNetDCOM</a> and compile using Visual Studio. The executable to use is ExploitDotNetDCOMSerialization.exe.

1) From a command prompt run the command aExploitDotNetDCOMSerialization.exe 6A28A945-790C-4B68-B0F4-34EEB1626EE3 notepada
2) Check the currently running processes for the privileged copy of notepad,

Expected Result:
No privilege escalation occurs.

Observed Result:
An instance of notepad is running at system privileges.

This bug is subject to a 90 day disclosure deadline. If 90 days elapse without a broadly available patch, then the bug report will automatically become visible to the public.





Found by: forshaw

Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close