Vulnerabilities > CVE-2008-1244 - Improper Authentication vulnerability in Belkin F5D7230-4

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
belkin
CWE-287
critical
exploit available

Summary

cgi-bin/setup_dns.exe on the Belkin F5D7230-4 router with firmware 9.01.10 does not require authentication, which allows remote attackers to perform administrative actions, as demonstrated by changing a DNS server via the dns1_1, dns1_2, dns1_3, and dns1_4 parameters. NOTE: it was later reported that F5D7632-4V6 with firmware 6.01.08 is also affected.

Vulnerable Configurations

Part Description Count
Hardware
Belkin
1

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.

Exploit-Db

descriptionBelkin wireless G router + ADSL2 modem Auth Bypass Exploit. CVE-2008-1242,CVE-2008-1244,CVE-2008-1245,CVE-2008-7115. Remote exploit for hardware platform
fileexploits/hardware/remote/6305.html
idEDB-ID:6305
last seen2016-01-31
modified2008-08-25
platformhardware
port
published2008-08-25
reporternoensr
sourcehttps://www.exploit-db.com/download/6305/
titleBelkin wireless G router + ADSL2 modem Auth Bypass Exploit
typeremote

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 28322,28319,28317 CVE(CAN) ID: CVE-2008-1242,CVE-2008-1244,CVE-2008-1245 Belkin Wireless G Router是一款家用的无线路由器。 Belkin Wireless G Router中的多个安全漏洞可能允许恶意用户绕过安全限制或导致拒绝服务。 1) 认证会话实现中的错误允许用户通过从之前已认证的IP地址创建会话来获得对路由器控制面板的访问。 2) 在cgi-bin/setup_dns.exe中强制权限方式中的错误允许用户通过直接访问有漏洞的脚本执行有限的管理操作。 3) cgi-bin/setup_virtualserver.exe脚本在处理HTTP POST数据是存在错误,远程攻击者可以通过发送带有Connection: Keep-Alive头的特制HTTP POST请求导致无法管理访问受影响的设备。 Belkin Wireless G Router F5D7230-4 9.1.10 Belkin Wireless G Router绕过安全限制和拒绝服务漏洞 发布日期:2008-03-19 更新日期:2008-03-20 受影响系统: Belkin Wireless G Router F5D7230-4 9.1.10 描述:BUGTRAQ ID: 28322,28319,28317 CVE(CAN) ID: CVE-2008-1242,CVE-2008-1244,CVE-2008-1245 Belkin Wireless G Router是一款家用的无线路由器。 Belkin Wireless G Router中的多个安全漏洞可能允许恶意用户绕过安全限制或导致拒绝服务。 1) 认证会话实现中的错误允许用户通过从之前已认证的IP地址创建会话来获得对路由器控制面板的访问。 2) 在cgi-bin/setup_dns.exe中强制权限方式中的错误允许用户通过直接访问有漏洞的脚本执行有限的管理操作。 3) cgi-bin/setup_virtualserver.exe脚本在处理HTTP POST数据是存在错误,远程攻击者可以通过发送带有Connection: Keep-Alive头的特制HTTP POST请求导致无法管理访问受影响的设备。 &lt;*来源:pdp (<a href=mailto:[email protected] target=_blank>[email protected]</a>) 链接:<a href=http://secunia.com/advisories/29345/ target=_blank>http://secunia.com/advisories/29345/</a> <a href=http://www.gnucitizen.org/projects/router-hacking-challenge/ target=_blank>http://www.gnucitizen.org/projects/router-hacking-challenge/</a> *&gt; 建议:厂商补丁: Belkin ------ 目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商的主页以获取最新版本: <a href=http://www.belkin.com/ target=_blank>http://www.belkin.com/</a>
idSSV:3066
last seen2017-11-19
modified2008-03-21
published2008-03-21
reporterRoot
titleBelkin Wireless G Router绕过安全限制和拒绝服务漏洞