CVE-2018-15517 / D-LINK Central WifiManager CWM-100 / Server Side Request Forgery

[hyp3rlinx <apparitionsec () gmail com>]

[+] Credits: John Page (aka hyp3rlinx)
[+] Website: hyp3rlinx.altervista.org
[+] Source:
http://hyp3rlinx.altervista.org/advisories/DLINK-CENTRAL-WIFI-MANAGER-CWM-100-SERVER-SIDE-REQUEST-FORGERY.txt
[+] ISR: ApparitionSec


***Greetz: indoushka | Eduardo B.***



[Vendor]
us.dlink.com


[Product]
D-LINK Central WifiManager (CWM 100)
Version 1.03 r0098
http://us.dlink.com/products/business-solutions/central-wifimanager-software-controller/

D-Link’s free Central WiFiManager is a web-based wireless Access Point
management tool, enabling you to create and manage multi-site,
multi-tenancy wireless networks.


[Vulnerability Type]
Server Side Request Forgery


[Affected Component]
MailConnect


[CVE Reference]
CVE-2018-15517


[Security Issue]
Using a web browser or script SSRF can be initiated against
internal/external systems to conduct port scans by leveraging D-LINKs
MailConnect component.

The MailConnect feature on D-Link Central WiFiManager CWM-100 1.03 r0098
devices is intended to check a connection to an SMTP server but actually
allows
outbound TCP to any port on any IP address, leading to SSRF, as
demonstrated by an index.php/System/MailConnect/host/
127.0.0.1/port/22/secure/ URI.
This can undermine accountability of where scan or connections actually
came from and or bypass the FW etc. This can be automated via script or
using Web Browser.


[Exploit/POC]
https://VICTIM-IP/index.php/System/MailConnect/host/port/secure/

reply: OK

Scan internal port 22 SSH:

https://VICTIM-IP/index.php/System/MailConnect/host/VICTIM-IP/port/22/secure/
reply: OK



[Network Access]
Remote



[Severity]
Medium



[Disclosure Timeline]
Vendor Notification: August 8, 2018
Vendor acknowledgement: August 8, 2018
CVE assigned Mitre: August 18, 2018
Request update: August 31, 2018
No reply from vendor
Request update: September 6, 2018
Vendor: "R&D has begun this month to patch your report." : September 12,
2018
Request update: October 3, 2018
Vendor: "will release a new beta for QA verification by end of this month
10'2018."
Request update: October 16, 2018
no reply from vendor
Request update: October 23, 2018
Vendor: "It still is schedule to be released by the 31st." : October 23,
2018
Inform vendor of disclosure by November 8, 2018 : October 31, 2018
No reply from vendor
November 8, 2018 : Public Disclosure


[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and
that due credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit
is given to the author. The author is not responsible for any misuse of the
information contained herein and accepts no responsibility
for any damage caused by the use or misuse of this information. The author
prohibits any malicious use of security related information
or exploits by the author or elsewhere. All content (c).

hyp3rlinx

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