Critical Vulnerability in python-pip: Unicode Separator Handling Flaw
Summary
USN-4961-2: python-pip vulnerability. Affects python-pip versions < 1.5.4-1ubuntu4+esm1. Fixed in 1.5.4-1ubuntu4+esm1. How to fix ↓
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Background
python-pip is a widely used package management system for Python, allowing users to install and manage software packages written in Python. It simplifies the process of package installation and dependency management. However, it has been found to have a vulnerability that affects its handling of unicode separators in git references, which could lead to security risks.
Vulnerability Detail
The vulnerability, identified as CVE-2021-3572, arises from the way pip processes unicode separators in git references. This flaw could allow a remote attacker to manipulate the installation process, potentially leading to the installation of unintended or malicious code from a different revision of a repository. The issue is significant as it compromises the integrity of the package management process, which is critical for maintaining secure and reliable software environments.
How To Fix
Minimum fixed version
1.5.4-1ubuntu4+esm1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python-pipTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can avoid using git references with unicode separators until the package is updated. This can help mitigate the risk of exploitation until a proper fix is applied.
Conclusion
The python-pip vulnerability CVE-2021-3572 poses a significant risk due to improper handling of unicode separators in git references. Users are strongly advised to update their packages to the patched versions provided to mitigate potential security threats. Utilizing tools like Vulert can further enhance your ability to monitor and manage vulnerabilities in your software.
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FAQ
CVE-2021-3572 is the identifier for the vulnerability found in python-pip that allows improper handling of unicode separators in git references.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Failing to fix this vulnerability could allow attackers to install malicious code, compromising the security and integrity of your applications.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities using just a manifest file like package-lock.json.
If immediate updates are not possible, avoid using git references with unicode separators as a temporary workaround.
References
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