id: CVE-2018-1000671

info:
  name: Sympa version =>6.2.16 - Cross-Site Scripting
  author: 0x_Akoko
  severity: medium
  description: Sympa version 6.2.16 and later contains a URL Redirection to Untrusted Site vulnerability in the referer parameter of the wwsympa fcgi login action that can result in open redirection and reflected cross-site scripting via data URIs.
  remediation: |
    Upgrade to a patched version of Sympa (>=6.2.17) or apply the necessary security patches provided by the vendor.
  reference:
    - https://github.com/sympa-community/sympa/issues/268
    - https://vuldb.com/?id.123670
    - https://nvd.nist.gov/vuln/detail/CVE-2018-1000671
    - https://lists.debian.org/debian-lts-announce/2018/09/msg00023.html
    - https://lists.debian.org/debian-lts-announce/2020/11/msg00015.html
  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-2018-1000671
    cwe-id: CWE-601
    epss-score: 0.00831
    epss-percentile: 0.79859
    cpe: cpe:2.3:a:sympa:sympa:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: sympa
    product: sympa
    shodan-query: http.html:"sympa"
  tags: cve,cve2018,redirect,sympa,debian

http:
  - method: GET
    path:
      - '{{BaseURL}}/sympa?referer=http://interact.sh&passwd=&previous_action=&action=login&action_login=&previous_list=&list=&email='

    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1