Using a web browser or script server-side request forgery (SSRF) can be initiated against internal/external systems to conduct port scans by leveraging D-LINK's MailConnect component. The MailConnect feature on D-Link Central WiFiManager CWM-100 version 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.
d9afd3cea418548b6c3b72153c1261fe[+] 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-Links 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