Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2025-4517: Allows arbitrary filesystem writes outside the extraction directory during extraction with filter="data". You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Only Python versions 3.12 or later are affected by these vulnerabilities, earlier versions don't include the extraction filter feature. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links. CVE-2025-4435: When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped. CVE-2025-4330: Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links. CVE-2025-4138: Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links. CVE-2024-12718: Allows modifying some file metadata (e.g. last modified) with filter="data" or file permissions (chmod) with filter="tar" of files outside the extraction directory. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Only Python versions 3.12 or later are affected by these vulnerabilities, earlier versions don't include the extraction filter feature. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | python-unversioned-command | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3 | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-debug | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-devel | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-idle | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-libs | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-test | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3-tkinter | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3.9-debuginfo | 0:3.9.23-1.amzn2023.0.1 |
| Amazon Linux · 2023 | python3.9-debugsource | 0:3.9.23-1.amzn2023.0.1 |
Vulnerabilities 5
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Critical 9.4CVE-2025-4517 Public exploit
Arbitrary writes via tarfile realpath overflow
Allows arbitrary filesystem writes outside the extraction directory during extraction with filter="data". You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() usin…
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High 7.5CVE-2025-4138 Public exploit
Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives u…
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High 7.5
Extraction filter bypass for linking outside extraction directory
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives u…
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High 7.5
Tarfile extracts filtered members when errorlevel=0
When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still…
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Medium 5.3
Bypass extraction filter to modify file metadata outside extraction directory
Allows modifying some file metadata (e.g. last modified) with filter="data" or file permissions (chmod) with filter="tar" of files outside the extraction directory. You are affected by this vulnerability if using the tarfile module to extract untrusted tar ar…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2024-12718.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-4138.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-4330.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-4435.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-4517.html