Moderate: python-jwcrypto security update
Summary
ALSA-2024:2559: Moderate: python-jwcrypto security update. Affects python3-jwcrypto versions < 0.8-5.el9_4. Fixed in 0.8-5.el9_4. How to fix ↓
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Background
The python-jwcrypto package is a Python library that implements various JSON Web Key (JWK), JSON Web Signature (JWS), JSON Web Encryption (JWE), and JSON Web Token (JWT) JOSE (JSON Object Signing and Encryption) standards. It provides functionality for generating, signing, encrypting, and verifying JSON web tokens. The package is widely used in applications that require secure authentication and authorization mechanisms.
Vulnerability Detail
A vulnerability has been identified in the python-jwcrypto package that could allow an attacker to cause a denial of service (DoS) by exploiting a malicious JSON Web Encryption (JWE) token. This vulnerability is tracked as CVE-2024-28102. An attacker can craft a specially crafted JWE token that triggers a flaw in the package, leading to excessive resource consumption and potentially causing the application to become unresponsive. The impact of this vulnerability can range from service disruption to complete denial of service.
How To Fix
Minimum fixed version
0.8-5.el9_4
This is the first release that contains the fix.
sudo dnf update python3-jwcryptoTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the security update as soon as possible to mitigate the risk of exploitation.
Conclusion
The python-jwcrypto package is vulnerable to a denial of service (DoS) attack through a malicious JSON Web Encryption (JWE) token. To mitigate this vulnerability, it is crucial to update the package to version 0.8-5.el9_4 or later. Failure to apply the security update may result in service disruption or complete denial of service. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The python-jwcrypto package is a Python library that implements various JSON Web Key (JWK), JSON Web Signature (JWS), JSON Web Encryption (JWE), and JSON Web Token (JWT) JOSE (JSON Object Signing and Encryption) standards. It provides functionality for generating, signing, encrypting, and verifying JSON web tokens.
This vulnerability can allow an attacker to cause a denial of service (DoS) by exploiting a malicious JSON Web Encryption (JWE) token. The impact can range from service disruption to complete denial of service.
To fix this vulnerability, it is recommended to update the python-jwcrypto package to version 0.8-5.el9_4 or later. This update includes a patch that addresses the vulnerability and ensures the proper handling of JWE tokens.
There is no known workaround for this vulnerability. It is essential to apply the security update as soon as possible to mitigate the risk of exploitation.
More information about this vulnerability can be found in the CVE page associated with CVE-2024-28102.
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