Arbitrary Code Execution Vulnerability in IPython: A Cross-User Threat
Summary
CVE-2022-21699: IPython (Interactive Python) is a command shell for interactive computing in multiple programming languages, originally developed for the Python programming language. Affects ipython across 2 version ranges.
< 7.20.0-1+deb11u1
< 46a51ed69cdf41b4333943d9ceeb945c4ede5668
Fixed in 7.20.0-1+deb11u1. How to fix ↓
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Background
IPython is an interactive command shell for computing in various programming languages, primarily Python. It offers a rich toolkit to help users with data analysis, visualization, and interactive computing. However, certain versions of IPython are vulnerable to an arbitrary code execution issue due to improper management of cross-user temporary files, which can lead to serious security risks.
Vulnerability Detail
The vulnerability arises from the way IPython handles temporary files created by users. When these files are not properly isolated, a malicious user can exploit this flaw to execute arbitrary code in the context of another user on the same machine. This can lead to unauthorized access to sensitive data, system compromise, and other malicious activities. The vulnerability has a CVSS score of 8.8, indicating a high severity level.
How To Fix
Minimum fixed version
7.20.0-1+deb11u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade ipythonTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading is not immediately possible, consider restricting user access to the IPython environment or using alternative secure environments for sensitive tasks. Additionally, ensure that proper file permissions are set to limit access to temporary files.
Conclusion
The arbitrary code execution vulnerability in IPython poses a significant risk to users, allowing malicious actors to execute code in the context of other users. It is crucial to upgrade to the latest secure versions to mitigate this risk. Users should also consider using tools like Vulert to monitor for vulnerabilities in their applications.
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FAQ
The vulnerability allows one user to execute arbitrary code as another user due to improper management of temporary files.
Affected versions include those prior to 7.20.0-1+deb11u1 for Debian 11 and prior to 7.31.1-1 for Debian 12 and 13.
Exploitation of this vulnerability can lead to unauthorized access to sensitive data, system compromise, and execution of malicious code.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground without any signup.
The CVSS score of this vulnerability is 8.8, indicating a high severity level.
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