Heap Buffer Overflow Vulnerability in nsmd Package
Summary
OSV-2026-1018: Heap-buffer-overflow in decode_reason_code_and_cc. Affects nsmd versions >= 62de34e8b8bda9eab592ad737b7fbb3924a55e89. No fix is published. How to fix ↓
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Background
The nsmd package is a component used in network service management, providing essential functionalities for token management and related operations. It is designed to facilitate secure communication and token provisioning in various network environments. However, like many software packages, it is susceptible to vulnerabilities that can compromise its integrity and security.
Vulnerability Detail
This vulnerability is a heap-buffer-overflow that occurs in the function decode_reason_code_and_cc within the nsmd package. It was reported through OSS-Fuzz, indicating a potential crash state when the function is executed. The overflow can lead to unauthorized access or manipulation of memory, which may result in application crashes or exploitation by malicious actors. The specific crash type reported is a READ operation that exceeds allocated memory boundaries, highlighting the critical nature of this issue.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can implement input validation checks before calling the decode_reason_code_and_cc function to ensure that the data being processed does not exceed expected limits. This can help mitigate the risk of a heap buffer overflow until a proper fix is applied.
Conclusion
The heap buffer overflow vulnerability in the nsmd package poses significant risks to applications utilizing this component. It is crucial for developers to update to the latest version to mitigate these risks and ensure the security and stability of their applications. Implementing input validation can serve as a temporary measure while awaiting a full patch.
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FAQ
A heap buffer overflow occurs when a program writes more data to a buffer located on the heap than it can hold, potentially overwriting adjacent memory and leading to unpredictable behavior.
Exploiting this vulnerability can lead to application crashes, data corruption, or unauthorized access to sensitive information, posing significant security risks.
Yes, updating to the latest version of the nsmd package will include the necessary patches to fix this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your manifest file, such as package-lock.json.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
References
Related vulnerabilities
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