Denial of Service Vulnerability in jose4j
Summary
CVE-2023-51775: jose4j denial of service via specifically crafted JWE. Affects org.bitbucket.b_c:jose4j versions < 0.9.4. Fixed in 0.9.4. How to fix ↓
Also tracked for
- libjose4j-java · Debian:13
The same CVE-2023-51775 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
jose4j is a Java library that provides support for the JSON Object Signing and Encryption (JOSE) specifications. It allows developers to work with JSON Web Tokens (JWTs) for secure communication and authentication. The library is widely used in Java applications for implementing JWT-based authentication and authorization mechanisms. However, a vulnerability has been discovered in versions prior to 0.9.4 that can lead to a denial of service (DoS) attack.
Vulnerability Detail
The vulnerability in jose4j arises from a lack of input validation when processing a specific parameter called p2c (PBES2 Count). An attacker can exploit this by sending a specially crafted request with a large p2c value, causing the library to consume excessive CPU resources. This can result in a DoS condition, where the affected application becomes unresponsive or slows down significantly. The impact of this vulnerability can be severe, as it can disrupt the normal operation of the application and potentially affect its availability.
How To Fix
Minimum fixed version
0.9.4
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is necessary to upgrade to the fixed version of the jose4j library to mitigate the risk of a DoS attack.
Conclusion
The denial of service vulnerability in jose4j can have severe consequences for applications using the library. It is crucial to upgrade to version 0.9.4 or later to mitigate the risk of a DoS attack. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
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FAQ
jose4j is a Java library for working with JSON Web Tokens (JWTs) and implementing secure communication and authentication mechanisms.
The vulnerability can lead to a denial of service (DoS) condition, causing the affected application to become unresponsive or slow down significantly.
To fix this vulnerability, you need to upgrade to version 0.9.4 or later of the jose4j library.
No, there is no known workaround for this vulnerability. Upgrading to the fixed version is the recommended solution.
You can find more information about the vulnerability in the advisory published on the GitHub Advisory Database.
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