SimpleHelp <= 5.5.7 - Arbitrary File Upload

id: CVE-2024-57728

info:
  name: SimpleHelp <= 5.5.7 - Arbitrary File Upload
  author: popy21
  severity: high
  description: |
    SimpleHelp remote support software v5.5.7 and before allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e. zip slip). This can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user. This template is a version-based check: it reads the version banner exposed by the vendor's own /allversions page and flags branches that predate the January 2025 fixes.
  impact: |
    An admin technician (or a low-privileged technician who first escalates via CVE-2024-57726 ) can write a crafted zip entry to any path on the host - a crontab on Linux, a replaced executable or DLL on Windows - and obtain remote code execution as the SimpleHelp server user, the chain ransomware operators such as Medusa and DragonForce used to take over managed estates.
  remediation: |
    Upgrade SimpleHelp to 5.5.8 or later (or apply the vendor's 070125 patch to the 5.4.10 and 5.3.9 branches), then rotate all administrator and technician passwords and restrict the source IP addresses allowed to log in.
  reference:
    - https://simple-help.com/kb---security-vulnerabilities-01-2025#security-vulnerabilities-in-simplehelp-5-5-7-and-earlier
    - https://www.horizon3.ai/attack-research/disclosures/critical-vulnerabilities-in-simplehelp-remote-support-software/
    - https://guides.simple-help.com/kb---checking-the-version-and-build-of-your-simplehelp-server
    - https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-57728
    - https://www.microsoft.com/en-us/security/blog/2026/04/06/storm-1175-focuses-gaze-on-vulnerable-web-facing-assets-in-high-tempo-medusa-ransomware-operations/
    - https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-dragonforce
    - https://nvd.nist.gov/vuln/detail/CVE-2024-57728
  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-2024-57728
    cwe-id: CWE-59
    epss-score: 0.64468
    epss-percentile: 0.99241
    cpe: cpe:2.3:a:simple-help:simplehelp:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: simple-help
    product: simplehelp
    shodan-query: html:"SimpleHelp"
    fofa-query: title="SimpleHelp"
  tags: cve,cve2024,simple-help,simplehelp,kev,passive,vkev

http:
  - method: GET
    path:
      - "{{BaseURL}}/allversions"

    extractors:
      - type: regex
        part: body
        group: 1
        name: version
        regex:
          - 'Visual Version:\s*([0-9]+\.[0-9]+(?:\.[0-9]+)?)'
        internal: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "SH Version"
          - "Visual Version"
        condition: and

      - type: dsl
        dsl:
          - "compare_versions(version, '< 5.3.9') || compare_versions(version, '>= 5.4.0', '< 5.4.10') || compare_versions(version, '>= 5.5.0', '< 5.5.8')"

      - type: status
        status:
          - 200
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