Critical Vulnerability in Python Packages: CVE-2022-48560 - Use-After-Free Issue
Summary
UBUNTU-CVE-2022-48560: A use-after-free exists in Python through 3.9 via heappushpop in heapq. Affects python2.7 versions < 2.7.6-8ubuntu0.6+esm17. Fixed in 2.7.6-8ubuntu0.6+esm17. How to fix ↓
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Background
Python is a widely-used high-level programming language known for its readability and versatility. It supports multiple programming paradigms and is commonly used in web development, data analysis, artificial intelligence, and more. The vulnerability CVE-2022-48560 affects various Python packages, particularly versions 2.7, 3.4, 3.5, 3.6, 3.7, and 3.8, which are utilized in numerous applications. This vulnerability could lead to severe security risks if not addressed promptly.
Vulnerability Detail
CVE-2022-48560 is a use-after-free vulnerability found in Python through version 3.9, specifically in the heappushpop function of the heapq module. This flaw allows an attacker to exploit the memory management of the Python interpreter, potentially leading to arbitrary code execution or crashes. The ramifications of this vulnerability can be significant, affecting the integrity and availability of applications relying on the affected Python versions.
How To Fix
Minimum fixed version
2.7.6-8ubuntu0.6+esm17
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python2.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider isolating the affected applications from untrusted inputs or environments. Implementing strict input validation and sanitization can help mitigate the risk until the package is updated.
Conclusion
CVE-2022-48560 presents a significant security risk to various Python packages. It is essential to update affected packages to their patched versions promptly to mitigate potential threats. Users should also consider implementing workarounds until updates can be applied.
See every vulnerability recorded for python2.7 →
FAQ
CVE-2022-48560 is a use-after-free vulnerability in Python that can lead to arbitrary code execution or application crashes.
The vulnerability affects Python versions 2.7, 3.4, 3.5, 3.6, 3.7, and 3.8.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
If you cannot update the package, consider implementing input validation and isolating affected applications from untrusted environments as a temporary workaround.
The CVSS score of CVE-2022-48560 is 7.5, indicating a high severity level.
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