发布时间 :2000-01-24 00:00:00
修订时间 :2008-09-10 15:02:54

[原文]The PMTU discovery procedure used by HP-UX 10.30 and 11.00 for determining the optimum MTU generates large amounts of traffic in response to small packets, allowing remote attackers to cause the system to be used as a packet amplifier.

[CNNVD]HP Path MTU Discovery DoS 漏洞(CNNVD-200001-054)

        HP-UX 10.30版本和11.00版本中用于确定最佳的MTU的PMTU discovery进程产生了大量小流量数据包。远程攻击者利用此漏洞导致系统成为包放大器。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
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: PARTIAL [可能会导致性能下降或中断资源访问]
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)

cpe:/o:hp:hp-ux:10.30HP HP-UX 10.30
cpe:/o:hp:hp-ux:11.00HP-UX 11.00

- OVAL (用于检测的技术细节)


- 官方数据库链接
(官方数据源) MITRE
(官方数据源) NVD
(官方数据源) CNNVD

- 其它链接及资源

- 漏洞信息

HP Path MTU Discovery DoS 漏洞
中危 设计错误
2000-01-24 00:00:00 2005-05-02 00:00:00
        HP-UX 10.30版本和11.00版本中用于确定最佳的MTU的PMTU discovery进程产生了大量小流量数据包。远程攻击者利用此漏洞导致系统成为包放大器。

- 公告与补丁

        The vendor recommends the following action:
        Reference ndd manpage (1M), /etc/rc.config.d/nddconf
        To ensure that this parameter is set each time the system is booted, add the following lines to /etc/rc.config.d/nddconf
        The value of is an integer from 0 to 99. The first parameter specified in the file should use an of 0, the second an of 1, and so on.
         Once these changes have been made, execute the following command:
         /usr/bin/ndd -c
         This sets all of the options specified in the file /etc/rc.config.d/nddconf.
        To verify that the parameter is set correctly, use the following command.
         /usr/bin/ndd -get /dev/ip ip_pmtu_strategy
         This should report a value of 1.
         Another way to change the ip_pmtu_strategy parameter on a running system is to use the following NDD command:
        /usr/bin/ndd -set /dev/ip ip_pmtu_strategy 1
        This setting will only last until the system is rebooted at which point the value of the parameter will be determined by the default value of 2 or whatever value is set in /etc/rc.config.d/nddconf

- 漏洞信息

HP Path MTU Discovery DoS
Denial of Service
Loss of Availability

- 漏洞描述

Unknown or Incomplete

- 时间线

2000-01-24 Unknow
Unknow Unknow

- 解决方案

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete