Vulnerabilities > CVE-2011-1249 - Permissions, Privileges, and Access Controls vulnerability in Microsoft products
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
The Ancillary Function Driver (AFD) in afd.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "Ancillary Function Driver Elevation of Privilege Vulnerability."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 18 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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://www.gnucitizen.org/blog/danger-danger-danger/) 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.
Exploit-Db
description Windows x86 - 'afd.sys' Privilege Escalation (MS11-046). CVE-2011-1249. Local exploit for Windows platform file exploits/windows_x86/local/40564.c id EDB-ID:40564 last seen 2016-10-18 modified 2016-10-18 platform windows_x86 port published 2016-10-18 reporter Tomislav Paskalev source https://www.exploit-db.com/download/40564/ title Windows x86 - 'afd.sys' Privilege Escalation (MS11-046) type local description Windows - Afd.sys Proof of Concept (MS11-046). CVE-2011-1249. Dos exploit for windows platform id EDB-ID:18755 last seen 2016-02-02 modified 2012-04-19 published 2012-04-19 reporter fb1h2s source https://www.exploit-db.com/download/18755/ title Windows - Afd.sys Proof of Concept MS11-046
Msbulletin
| bulletin_id | MS11-046 |
| bulletin_url | |
| date | 2011-06-14T00:00:00 |
| impact | Elevation of Privilege |
| knowledgebase_id | 2503665 |
| knowledgebase_url | |
| severity | Important |
| title | Vulnerability in Ancillary Function Driver Could Allow Elevation of Privilege |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS11-046.NASL |
| description | The remote Windows host contains a version of the Ancillary Function Driver (afd.sys) that does not properly validate input before passing it from user mode to the kernel. An attacker with local access to the affected system could exploit this issue to execute arbitrary code in kernel mode and take complete control of the affected system. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 55126 |
| published | 2011-06-15 |
| reporter | This script is Copyright (C) 2011-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/55126 |
| title | MS11-046: Vulnerability in Ancillary Function Driver Could Allow Elevation of Privilege (2503665) |
| code | |
Oval
| accepted | 2012-03-26T04:02:41.872-04:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| class | vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| definition_extensions |
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| description | The Ancillary Function Driver (AFD) in afd.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "Ancillary Function Driver Elevation of Privilege Vulnerability." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| family | windows | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| id | oval:org.mitre.oval:def:12731 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| status | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| submitted | 2011-06-14T13:00:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| title | Ancillary Function Driver Elevation of Privilege Vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| version | 46 |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/139196/winx86afd-escalate.txt |
| id | PACKETSTORM:139196 |
| last seen | 2016-12-05 |
| published | 2016-10-17 |
| reporter | Tomislav Paskalev |
| source | https://packetstormsecurity.com/files/139196/Windows-x86-afd.sys-Privilege-Escalation.html |
| title | Windows x86 afd.sys Privilege Escalation |
Seebug
bulletinFamily exploit description Bugtraq ID: 48198 CVE ID：CVE-2011-1249 Microsoft Windows是一款流行的操作系统。 处理用户空间数据传递到内核时AFD驱动存在输入验证错误，构建特制的应用程序，可在内核上下文执行任意代码。 根据Microsoft报告，此漏洞已经在网络上积极利用 Microsoft Windows XP Service Pack 3 0 Microsoft Windows XP Professional x64 Edition SP2 Microsoft Windows XP Professional x64 Edition Microsoft Windows XP Professional SP3 Microsoft Windows XP Professional SP2 Microsoft Windows XP Professional SP1 Microsoft Windows XP Professional Microsoft Windows XP Media Center Edition SP3 Microsoft Windows XP Media Center Edition SP2 Microsoft Windows XP Media Center Edition SP1 Microsoft Windows XP Media Center Edition Microsoft Windows XP Home SP3 Microsoft Windows XP Home SP2 Microsoft Windows XP Home SP1 Microsoft Windows XP Home Microsoft Windows XP Embedded SP3 Microsoft Windows XP Embedded SP2 Microsoft Windows XP Embedded SP1 Microsoft Windows XP Embedded Microsoft Windows XP 64-bit Edition Version 2003 SP1 Microsoft Windows XP 64-bit Edition Version 2003 Microsoft Windows XP 64-bit Edition SP1 Microsoft Windows XP 64-bit Edition Microsoft Windows XP - Gold X64 Microsoft Windows XP - Gold Home Microsoft Windows XP - Gold 64-Bit-2002 Microsoft Windows Vista x64 Edition SP2 Microsoft Windows Vista x64 Edition SP1 Microsoft Windows Vista x64 Edition 0 Microsoft Windows Vista Home Premium 64-bit edition SP2 Microsoft Windows Vista Home Premium 64-bit edition SP1 Microsoft Windows Vista Home Premium 64-bit edition 0 Microsoft Windows Vista Home Basic 64-bit edition Sp2 X64 Microsoft Windows Vista Home Basic 64-bit edition SP2 Microsoft Windows Vista Home Basic 64-bit edition Sp1 X64 Microsoft Windows Vista Home Basic 64-bit edition SP1 Microsoft Windows Vista Home Basic 64-bit edition 0 Microsoft Windows Vista Enterprise 64-bit edition SP2 Microsoft Windows Vista Enterprise 64-bit edition SP1 Microsoft Windows Vista Enterprise 64-bit edition 0 Microsoft Windows Vista Business 64-bit edition SP2 Microsoft Windows Vista Business 64-bit edition SP1 Microsoft Windows Vista Business 64-bit edition 0 Microsoft Windows Server 2008 R2 x64 SP1 Microsoft Windows Server 2008 R2 x64 0 Microsoft Windows Server 2008 R2 Itanium SP1 Microsoft Windows Server 2008 R2 Itanium 0 Microsoft Windows Server 2008 for x64-based Systems SP2 Microsoft Windows Server 2008 for x64-based Systems 0 Microsoft Windows Server 2008 for Itanium-based Systems SP2 Microsoft Windows Server 2008 for Itanium-based Systems 0 Microsoft Windows Server 2008 for 32-bit Systems SP2 Microsoft Windows Server 2008 for 32-bit Systems 0 Microsoft Windows Server 2003 x64 SP2 Microsoft Windows Server 2003 x64 SP1 Microsoft Windows Server 2003 Standard Edition SP2 Microsoft Windows Server 2003 Standard Edition SP1 Microsoft Windows Server 2003 Standard Edition Microsoft Windows Server 2003 Itanium SP2 Microsoft Windows Server 2003 Itanium SP1 Microsoft Windows Server 2003 Itanium 0 Microsoft Windows 7 for x64-based Systems SP1 Microsoft Windows 7 for x64-based Systems 0 Microsoft Windows 7 for 32-bit Systems SP1 Microsoft Windows 7 for 32-bit Systems 厂商解决方案 用户可参考如下供应商提供的安全公告获得补丁信息： http://www.microsoft.com/technet/security/Bulletin/MS11-046.mspx id SSV:20642 last seen 2017-11-19 modified 2011-06-16 published 2011-06-16 reporter Root title Microsoft Windows 'AFD.sys'驱动本地特权提升漏洞 bulletinFamily exploit description No description provided by source. id SSV:60072 last seen 2017-11-19 modified 2012-04-20 published 2012-04-20 reporter Root source https://www.seebug.org/vuldb/ssvid-60072 title MS11-046 Microsoft Windows (x86) - 'afd.sys' Privilege Escalation (CVE-2011-1249)