Vulnerabilities > CVE-2008-1154 - Improper Authentication vulnerability in Cisco products

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
cisco
CWE-287
critical

Summary

The Disaster Recovery Framework (DRF) master server in Cisco Unified Communications products, including Unified Communications Manager (CUCM) 5.x and 6.x, Unified Presence 1.x and 6.x, Emergency Responder 2.x, and Mobility Manager 2.x, does not require authentication for requests received from the network, which allows remote attackers to execute arbitrary code via unspecified vectors.

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.

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 28591 CVE(CAN) ID: CVE-2008-1154 灾难恢复框架(DRF)是Cisco Unified Communications产品家族中一些产品间所共享的功能,允许管理员将系统配置备份和恢复到本地磁带驱动或远程服务器。 DRF Master服务器负责执行备份和恢复请求。DRF Master服务器对从网络接收到的请求没有执行认证,未经认证的远程用户可以连接到DRF Master服务器并执行任何DRF相关的任务,包括: * 修改或删除计划备份 * 将系统备份拷贝到用户指定的远程服务器 * 从远程服务器恢复用户指定的配置 * 执行任意操作系统命令 攻击者可以利用这个漏洞导致拒绝服务、获得敏感配置信息、覆盖配置参数或以完全的管理权限执行任意命令。 Cisco Emergency Responder 2.x Cisco Unified Communications Manager Business Edition Cisco Unified Communications Manager 6.x Cisco Unified Communications Manager 5.x Cisco Unified Precense 6.x Cisco Unified Precense 1.x Cisco Mobility Manager 2.x 临时解决方法: * 禁用DRF Master服务,或限制对DRF Master服务(TCP 4040端口)的访问。 厂商补丁: Cisco ----- Cisco已经为此发布了一个安全公告(cisco-sa-20080403-drf)以及相应补丁: cisco-sa-20080403-drf:Cisco Unified Communications Disaster Recovery Framework Command Execution Vulnerability 链接:<a href=http://www.cisco.com/warp/public/707/cisco-sa-20080403-drf.shtml target=_blank>http://www.cisco.com/warp/public/707/cisco-sa-20080403-drf.shtml</a> 补丁下载: <a href=http://www.cisco.com/cgi-bin/tablebuild.pl/callmgr-utilpage?psrtdcat20e2 target=_blank>http://www.cisco.com/cgi-bin/tablebuild.pl/callmgr-utilpage?psrtdcat20e2</a>
idSSV:3122
last seen2017-11-19
modified2008-04-09
published2008-04-09
reporterRoot
titleCisco Unified Communications灾难恢复框架远程命令执行漏洞