CVE-2005-3675
CVSS7.8
发布时间 :2005-11-18 18:03:00
修订时间 :2008-09-05 16:55:00
NMCOS    

[原文]The Transmission Control Protocol (TCP) allows remote attackers to cause a denial of service (bandwidth consumption) by sending ACK messages for packets that have not yet been received (optimistic ACKs), which can cause the sender to increase its transmission rate until it fills available bandwidth.


[CNNVD]多家厂商TCP应答远程拒绝服务漏洞(CNNVD-200511-249)

        传输控制协议(TCP)可在报文交换网络中提供可靠的主机到主机的传输。
        多家厂商的TCP报文应该处理上存在漏洞,远程攻击者可能利用此漏洞对主机进行拒绝服务攻击。在正常的运行过程中,TCP客户端应答(ACK)服务端所发送的报文接受者,TCP发送者根据接收报文ACK来改变其传输速率。优化的ACK(optimistic ACK)指的是客户端为没有收到的数据段所发送的ACK。攻击者可以创建特制的优化的ACK,这些ACK会响应发送者已经注入到网络中的合法报文(通常被称为in-flight报文)。这样发送者就会以为传输处理比实际情况要好,就可能增加发送报文的速率。因此攻击者可能诱骗用户传输多于可用带宽的数据,消耗过多的网络资源,导致拒绝服务。

- CVSS (基础分值)

CVSS分值: 7.8 [严重(HIGH)]
机密性影响: NONE [对系统的机密性无影响]
完整性影响: NONE [不会对系统完整性产生影响]
可用性影响: COMPLETE [可能导致系统完全宕机]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: [--]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3675
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-3675
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200511-249
(官方数据源) CNNVD

- 其它链接及资源

http://www.kb.cert.org/vuls/id/102014
(VENDOR_ADVISORY)  CERT-VN  VU#102014
http://xforce.iss.net/xforce/xfdb/23055
(UNKNOWN)  XF  tcp-congestion-control-dos(23055)
http://www.securityfocus.com/bid/15468/
(UNKNOWN)  BID  15468
http://www.cs.umd.edu/~capveg/optack/optack-extended.pdf
(UNKNOWN)  MISC  http://www.cs.umd.edu/~capveg/optack/optack-extended.pdf

- 漏洞信息

多家厂商TCP应答远程拒绝服务漏洞
高危 设计错误
2005-11-18 00:00:00 2006-06-12 00:00:00
远程  
        传输控制协议(TCP)可在报文交换网络中提供可靠的主机到主机的传输。
        多家厂商的TCP报文应该处理上存在漏洞,远程攻击者可能利用此漏洞对主机进行拒绝服务攻击。在正常的运行过程中,TCP客户端应答(ACK)服务端所发送的报文接受者,TCP发送者根据接收报文ACK来改变其传输速率。优化的ACK(optimistic ACK)指的是客户端为没有收到的数据段所发送的ACK。攻击者可以创建特制的优化的ACK,这些ACK会响应发送者已经注入到网络中的合法报文(通常被称为in-flight报文)。这样发送者就会以为传输处理比实际情况要好,就可能增加发送报文的速率。因此攻击者可能诱骗用户传输多于可用带宽的数据,消耗过多的网络资源,导致拒绝服务。

- 公告与补丁

        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:
        http://www.ietf.org/

- 漏洞信息

22826
TCP Optimistic ACK Remote DoS
Remote / Network Access Denial of Service
Loss of Availability

- 漏洞描述

Unknown or Incomplete

- 时间线

2005-11-10 Unknow
Unknow Unknow

- 解决方案

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

Multiple Vendor TCP Acknowledgements Remote Denial Of Service Vulnerability
Design Error 15468
Yes No
2005-11-16 12:00:00 2005-11-16 12:00:00
Rob Sherwood of the University of Maryland reported this issue, and researched its associated exploitation methods. Stefan Savage, Neal Cardwell, David Wetherall, and Tom Anderson published information on the underlying protocol issue.

- 受影响的程序版本

IETF RFC 793: TCP

- 漏洞讨论

Multiple vendors are susceptible to a remote TCP acknowledgement denial of service vulnerability.

This issue presents itself when the remote peer forges acknowledgment packets prior to actually receiving packets from the sending host. As soon as the server receives an acknowledgment for a packet that has been sent, it assumes that the client has received it. These acknowledgment packets influence the servers congestion control mechanism.

This vulnerability allows remote attackers to consume excessive network resources, denying network service to legitimate users.

This issue exists in the TCP protocol specification as defined by RFC 793. However, it is likely that a number of specific vendor implementations will also be affected. This BID will be updated as individual implementations of the protocol are reported to be affected.

- 漏洞利用

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 解决方案

Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 相关参考

 

 

关于SCAP中文社区

SCAP中文社区是国内第一个以SCAP为主题的中文开放社区。了解更多信息,请查阅[关于本站]

版权声明

CVE/CWE/OVAL均为MITRE公司的注册商标,它们的官方数据源均保存在MITRE公司的相关网站