Vulnerabilities > CVE-2009-0085 - Improper Authentication vulnerability in Microsoft products
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
The Secure Channel (aka SChannel) authentication component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, when certificate authentication is used, does not properly validate the client's key exchange data in Transport Layer Security (TLS) handshake messages, which allows remote attackers to spoof authentication by crafting a TLS packet based on knowledge of the certificate but not the private key, aka "SChannel Spoofing Vulnerability."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 15 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Authentication Abuse An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Utilizing REST's Trust in the System Resource to Register Man in the Middle This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
- Man in the Middle Attack This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.
Msbulletin
| bulletin_id | MS09-007 |
| bulletin_url | |
| date | 2009-03-10T00:00:00 |
| impact | Spoofing |
| knowledgebase_id | 960225 |
| knowledgebase_url | |
| severity | Important |
| title | Vulnerability in SChannel Could Allow Spoofing |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS09-007.NASL |
| description | The Secure Channel (SChannel) authentication component included in the remote version of Windows does not sufficiently validate certain Transport Layer Security (TLS) handshake messages to ensure that a client does in fact have access to the private key linked to a certificate used for authentication. An attacker who has access to the public key component of a user |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 35823 |
| published | 2009-03-11 |
| reporter | This script is Copyright (C) 2009-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/35823 |
| title | MS09-007: Vulnerability in SChannel Could Allow Spoofing (960225) |
| code | |
Oval
| accepted | 2011-10-24T04:00:17.494-04:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| class | vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| definition_extensions |
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| description | The Secure Channel (aka SChannel) authentication component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, when certificate authentication is used, does not properly validate the client's key exchange data in Transport Layer Security (TLS) handshake messages, which allows remote attackers to spoof authentication by crafting a TLS packet based on knowledge of the certificate but not the private key, aka "SChannel Spoofing Vulnerability." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| family | windows | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| id | oval:org.mitre.oval:def:6011 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| status | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| submitted | 2009-03-10T16:00:00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| title | SChannel Spoofing Vulnerability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| version | 72 |
Seebug
bulletinFamily exploit description BUGTRAQ ID: 34015 CVE(CAN) ID: CVE-2009-0085 Microsoft Windows是微软发布的非常流行的操作系统。 Windows的GDI内核组件没有正确地验证用户态所传送输入，如果用户受骗查看了恶意网站上的特制EMF或WMF图形文件的话，就可能导致在系统上执行任意内核态代码。 Microsoft Windows XP SP3 Microsoft Windows XP SP2 Microsoft Windows Vista SP1 Microsoft Windows Vista Microsoft Windows Server 2008 Microsoft Windows Server 2003 SP2 Microsoft Windows Server 2003 SP1 Microsoft Windows 2000SP4 临时解决方法： * 通过修改注册表禁用元文件处理 1. 单击“开始”，单击“运行”，在“打开”框中键入Regedit，然后单击“确定”。 2. 找到并单击下列注册表子项： HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\GRE_Initialize 3. 在“编辑”菜单上，指向“新建”，然后单击“DWORD”。 4. 键入DisableMetaFiles，然后按回车。 5. 在“编辑”菜单上，单击“修改”以修改DisableMetaFiles注册表项。 6. 在“数值数据”框中键入1，然后单击“确定”。 7. 退出注册表编辑器。 8. 重新启动计算机。 厂商补丁： Microsoft --------- Microsoft已经为此发布了一个安全公告（MS09-006）以及相应补丁: MS09-006：Vulnerabilities in Windows Kernel Could Allow Remote Code Execution (958690) 链接：<a href=http://www.microsoft.com/technet/security/bulletin/MS09-006.mspx?pf=true target=_blank rel=external nofollow>http://www.microsoft.com/technet/security/bulletin/MS09-006.mspx?pf=true</a> id SSV:4896 last seen 2017-11-19 modified 2009-03-12 published 2009-03-12 reporter Root title Microsoft Windows内核GDI EMF/WMF解析远程代码执行漏洞（MS09-006） bulletinFamily exploit description BUGTRAQ ID: 34015 CVE(CAN) ID: CVE-2009-0085 Microsoft Windows是微软发布的非常流行的操作系统。 Windows的SChannel（Secure Channel）认证组件在基于证书的认证期间没有充分地验证某些传输层安全（TLS）握手消息。如果攻击者通过其他途径获得了认证所使用的证书的话，就可以仅使用授权用户的数字证书而无需相关私钥就可以认证到服务器。 Microsoft Windows XP SP3 Microsoft Windows XP SP2 Microsoft Windows Vista SP1 Microsoft Windows Vista Microsoft Windows Server 2008 Microsoft Windows Server 2003 SP2 Microsoft Windows Server 2003 SP1 Microsoft Windows 2000SP4 临时解决方法： * 实施不受这个漏洞影响的活动目录证书映射。 厂商补丁： Microsoft --------- Microsoft已经为此发布了一个安全公告（MS09-007）以及相应补丁: MS09-007：Vulnerability in SChannel Could Allow Spoofing (960225) 链接：<a href=http://www.microsoft.com/technet/security/bulletin/MS09-007.mspx?pf=true target=_blank rel=external nofollow>http://www.microsoft.com/technet/security/bulletin/MS09-007.mspx?pf=true</a> id SSV:4897 last seen 2017-11-19 modified 2009-03-12 published 2009-03-12 reporter Root title Microsoft Windows SChannel认证欺骗漏洞（MS09-007）
References
- http://www.securitytracker.com/id?1021828
- http://secunia.com/advisories/34215
- http://www.vupen.com/english/advisories/2009/0660
- http://osvdb.org/52521
- http://www.us-cert.gov/cas/techalerts/TA09-069A.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6011
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-007