Vulnerabilities > CVE-2009-0568 - Permissions, Privileges, and Access Controls vulnerability in Microsoft products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
The RPC Marshalling Engine (aka NDR) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly maintain its internal state, which allows remote attackers to overwrite arbitrary memory locations via a crafted RPC message that triggers incorrect pointer reading, related to "IDL interfaces containing a non-conformant varying array" and FC_SMVARRAY, FC_LGVARRAY, FC_VARIABLE_REPEAT, and FC_VARIABLE_OFFSET, aka "RPC Marshalling Engine 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.
Msbulletin
| bulletin_id | MS09-026 |
| bulletin_url | |
| date | 2009-06-09T00:00:00 |
| impact | Elevation of Privilege |
| knowledgebase_id | 970238 |
| knowledgebase_url | |
| severity | Important |
| title | Vulnerability in RPC Could Allow Elevation of Privilege |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS09-026.NASL |
| description | The RPC Marshalling Engine installed on the remote Windows host does not update its internal state appropriately, which could lead to a pointer being read from an incorrect location. A remote attacker may be able to leverage this issue to execute arbitrary code on the affected host and take complete control of it. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 39348 |
| published | 2009-06-10 |
| reporter | This script is Copyright (C) 2009-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/39348 |
| title | MS09-026: Vulnerability in RPC Could Allow Elevation of Privilege (970238) |
| code | |
Oval
| accepted | 2014-03-03T04:01:14.412-05:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| class | vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| contributors |
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| definition_extensions |
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| description | The RPC Marshalling Engine (aka NDR) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly maintain its internal state, which allows remote attackers to overwrite arbitrary memory locations via a crafted RPC message that triggers incorrect pointer reading, related to "IDL interfaces containing a non-conformant varying array" and FC_SMVARRAY, FC_LGVARRAY, FC_VARIABLE_REPEAT, and FC_VARIABLE_OFFSET, aka "RPC Marshalling Engine Vulnerability." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| family | windows | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| id | oval:org.mitre.oval:def:6227 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| status | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| submitted | 2009-06-09T14:00:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| title | RPC Marshalling Engine Vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| version | 76 |
Seebug
| bulletinFamily | exploit |
| description | BUGTRAQ ID: 35219 CVE(CAN) ID: CVE-2009-0568 Microsoft Windows是微软发布的非常流行的操作系统。 Windows远程过程调用（RPC）工具中存在权限提升漏洞，RPC分组引擎未能正确的更新其内部状态，导致从错误的位置读取指针。成功利用此漏洞的攻击者可执行任意代码，并可完全控制受影响的系统。攻击者可随后安装程序；查看、更改或删除数据；或者创建拥有完全用户权限的新帐户。 Microsoft Windows的受支持版本没有捆绑任何RPC服务器或可以利用此漏洞的客户端。在默认配置中，用户不会受到利用此漏洞的攻击。 Microsoft Windows XP SP3 Microsoft Windows XP SP2 Microsoft Windows Vista SP2 Microsoft Windows Vista SP1 Microsoft Windows Vista Microsoft Windows Server 2008 SP2 Microsoft Windows Server 2008 Microsoft Windows Server 2003 SP2 Microsoft Windows 2000SP4 厂商补丁： Microsoft --------- Microsoft已经为此发布了一个安全公告（MS09-026）以及相应补丁: MS09-026：Vulnerability in RPC Could Allow Elevation of Privilege (970238) 链接：<a href="http://www.microsoft.com/technet/security/Bulletin/MS09-026.mspx?pf=true" target="_blank" rel=external nofollow>http://www.microsoft.com/technet/security/Bulletin/MS09-026.mspx?pf=true</a> |
| id | SSV:11614 |
| last seen | 2017-11-19 |
| modified | 2009-06-13 |
| published | 2009-06-13 |
| reporter | Root |
| title | Microsoft Windows RPC分组引擎远程代码执行漏洞(MS09-026) |
References
- http://blogs.technet.com/srd/archive/2009/06/09/ms09-026-how-a-developer-can-know-if-their-rpc-interface-is-affected.aspx
- http://osvdb.org/54936
- http://www.securityfocus.com/bid/35219
- http://www.securitytracker.com/id?1022357
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1545
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-026
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6227