发布时间 :2005-08-16 00:00:00
修订时间 :2016-10-17 23:28:45

[原文]Nortel Contivity VPN Client V05_01.030, when configuring a certificate to be used as authentication, does not properly drop system privileges, which allows local users to gain privileges by opening a program with the File Open dialog box.

[CNNVD]Nortel Contivity VPN客户端 权限提升漏洞(CNNVD-200508-142)

        当配置证书作为认证时,Nortel Contivity VPN客户端V05_01.030不能正确地丢掉系统权限。这使得本地用户可以通过使用文件打开对话框打开程序获取权限。

- CVSS (基础分值)

CVSS分值: 7.2 [严重(HIGH)]
机密性影响: COMPLETE [完全的信息泄露导致所有系统文件暴露]
完整性影响: COMPLETE [系统完整性可被完全破坏]
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: LOCAL [漏洞利用需要具有物理访问权限或本地帐户]
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)


- 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
(UNKNOWN)  BUGTRAQ  20050810 Privilege escalation in Nortel Contivity VPN Client V05_01.030

- 漏洞信息

Nortel Contivity VPN客户端 权限提升漏洞
高危 未知
2005-08-16 00:00:00 2006-08-30 00:00:00
        当配置证书作为认证时,Nortel Contivity VPN客户端V05_01.030不能正确地丢掉系统权限。这使得本地用户可以通过使用文件打开对话框打开程序获取权限。

- 公告与补丁


- 漏洞信息

Nortel VPN Client Software Local Privilege Escalation
Local Access Required Input Manipulation
Loss of Integrity
Exploit Public

- 漏洞描述

Nortel VPN Client contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when the client is manipulated to run local commands. The VPN Client allows the local user to select an application instead of a configuration file or replace a VPN Client application with a local application. The following application screens can be manipulated (e.g. Change file to cmd.exe) to allow this flaw to occur: - Options >> Authentication Options >> Digital Certificate Authentication Entrust - Connection Wizard - Group Authentication Options >> Challenge Response Token Options >> Software Token Directory This flaw may lead to a loss of integrity as any local commands can be executed as the same user as the VPN Client (typically running as a service under the Window System account).

- 时间线

2005-08-10 Unknow
2005-08-10 Unknow

- 解决方案

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround: Run the client as a local user application and not as a service

- 相关参考

- 漏洞作者