Critical Buffer Overflow Vulnerability in Python3 Package - CVE-2022-37454
Summary
ALPINE-CVE-2022-37454: The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. Affects python3 versions < 3.10.9-r0. Fixed in 3.10.9-r0. How to fix ↓
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Background
The Python3 package in Alpine Linux is a widely used implementation of the Python programming language, known for its simplicity and versatility in various applications, including web development, data analysis, and automation. This package is integral to many software projects, making its security paramount. The vulnerability identified as CVE-2022-37454 affects versions of Python3 in Alpine Linux distributions v3.16 and v3.17, exposing users to potential security risks.
Vulnerability Detail
CVE-2022-37454 is a critical vulnerability stemming from an integer overflow and subsequent buffer overflow in the Keccak XKCP SHA-3 reference implementation. This flaw allows attackers to execute arbitrary code or compromise the expected cryptographic properties of the software. The vulnerability arises in the sponge function interface, which is a core component of the SHA-3 hashing algorithm. The CVSS score for this vulnerability is 9.8, indicating a high severity level that necessitates immediate attention.
How To Fix
Minimum fixed version
3.10.9-r0
This is the first release that contains the fix.
sudo apk add --upgrade python3Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users may consider avoiding the use of the affected SHA-3 functions until the package is updated. However, this is not a long-term solution and should only be used if immediate patching is not feasible.
Conclusion
CVE-2022-37454 represents a significant security threat to users of the Python3 package in Alpine Linux. It is crucial for users to update to the patched version to mitigate risks associated with this vulnerability. Regular monitoring and prompt updates are essential for maintaining software security.
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FAQ
CVE-2022-37454 is a critical vulnerability in the Python3 package for Alpine Linux, caused by an integer overflow leading to a buffer overflow.
The vulnerability can allow attackers to execute arbitrary code or compromise cryptographic integrity, posing significant security risks.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If immediate updates are not possible, consider avoiding the use of the affected SHA-3 functions as a temporary workaround.
The CVSS score for this vulnerability is 9.8, indicating a critical level of severity that requires urgent action.
References
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