a. King Cope, “OpenSSH Keyboard-Interactive Authentication Brute Force Vulnerability
(MaxAuthTries Bypass)”, email to Full Disclosure mailing list, July 17, 2015.
b. Section 21.2 of Assets Portfolio, October 6, 2014.
Telnet
Telnet
提供了对服务器和嵌入式设备的命令行访问功能。该协议未提供传输
安全支持,具备网络访问权限的攻击者可以对
Telnet
会话进行被动式窃听或
主动式劫持。
暴露的网络服务容易遭受如下两类攻击:
•
口令暴力破解,可以揭示弱的或缺省的密钥凭据。
• Telnet
服务器软件漏洞的匿名渗透(无需密钥凭据)。
Nmap
可用于对
Telnet
服务尝试进行指纹识别,如实例
7-10 ...
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