ID CVE-2014-6324
Summary The Kerberos Key Distribution Center (KDC) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote authenticated domain users to obtain domain administrator privileges via a forged signature in a ticket, as exploited in the wild in November 2014, aka "Kerberos Checksum Vulnerability."
Vulnerable Configurations
  • Microsoft Windows 7
  • cpe:2.3:o:microsoft:windows_8
  • cpe:2.3:o:microsoft:windows_8.1
  • Microsoft Windows Server 2003 Service Pack 2
  • Microsoft Windows Server 2008 Service Pack 2
  • Microsoft Windows Server 2008 R2 Service Pack 1
  • Microsoft Windows Server 2012
  • cpe:2.3:o:microsoft:windows_server_2012:r2
  • Microsoft Windows Vista Service Pack 2
Base: 9.0 (as of 07-09-2016 - 09:21)
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf ( http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
exploit-db via4
  • description MS14-068. CVE-2014-6324. Remote exploit for windows platform
    id EDB-ID:35474
    last seen 2016-02-04
    modified 2014-12-05
    published 2014-12-05
    reporter Sylvain Monne
    title Windows Kerberos - Elevation of Privilege MS14-068
  • description HackBack - A DIY Guide. Papers exploit for Multiple platform
    id EDB-ID:41915
    last seen 2017-04-25
    modified 2016-04-17
    published 2016-04-17
    reporter Exploit-DB
    title HackBack - A DIY Guide
metasploit via4
description This module exploits a vulnerability in the Microsoft Kerberos implementation. The problem exists in the verification of the Privilege Attribute Certificate (PAC) from a Kerberos TGS request, where a domain user may forge a PAC with arbitrary privileges, including Domain Administrator. This module requests a TGT ticket with a forged PAC and exports it to a MIT Kerberos Credential Cache file. It can be loaded on Windows systems with the Mimikatz help. It has been tested successfully on Windows 2008.
last seen 2019-03-13
modified 2017-07-24
published 2014-12-22
reliability Normal
reporter Rapid7
title MS14-068 Microsoft Kerberos Checksum Validation Vulnerability
msbulletin via4
bulletin_id MS14-068
date 2014-11-11T00:00:00
impact Elevation of Privilege
knowledgebase_id 3011780
severity Critical
title Vulnerability in Kerberos Could Allow Elevation of Privilege
nessus via4
NASL family Windows : Microsoft Bulletins
description The remote Windows host is affected by a privilege escalation vulnerability due to the Kerberos Key Distribution Center (KDC) implementation not properly validating signatures. A remote attacker can exploit this vulnerability to elevate an unprivileged domain user account to a domain administrator account. ESKIMOROLL is one of multiple Equation Group vulnerabilities and exploits disclosed on 2017/04/14 by a group known as the Shadow Brokers.
last seen 2019-02-21
modified 2018-11-15
plugin id 79311
published 2014-11-18
reporter Tenable
title MS14-068: Vulnerability in Kerberos Could Allow Elevation of Privilege (3011780) (ESKIMOROLL)
refmap via4
bid 70958
cert TA14-323A
  • HPSBMU03224
  • SSRT101864
ms MS14-068
sectrack 1031237
secunia 62556
the hacker news via4
id THN:CD55D97C4B7F0F15409E50C509B347D3
last seen 2018-01-27
modified 2014-11-19
published 2014-11-18
reporter Swati Khandelwal
title Microsoft Releases Emergency Out-of-Band Patch for Kerberos Bug MS14-068
Last major update 06-01-2017 - 22:00
Published 18-11-2014 - 18:59
Last modified 12-10-2018 - 18:07
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