Heap Buffer Overflow Vulnerability in nsmd Package
Summary
OSV-2026-1016: Heap-buffer-overflow in decode_query_device_identification_resp. Affects nsmd versions >= 62de34e8b8bda9eab592ad737b7fbb3924a55e89. No fix is published. How to fix ↓
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Background
The nsmd package is a component utilized in various applications for managing network services and device identification. It is designed to facilitate communication between devices and ensure proper identification and query handling. However, due to its complex handling of input data, it is susceptible to vulnerabilities that can lead to severe security issues, such as buffer overflows.
Vulnerability Detail
The vulnerability identified is a heap-buffer-overflow occurring in the function decode_query_device_identification_resp. This issue was reported through OSS-Fuzz, indicating that an attacker could exploit this vulnerability to read beyond the allocated memory buffer, potentially leading to unauthorized access to sensitive data or application crashes. The specific crash type is a READ operation that occurs when the function attempts to access memory that it should not, which can compromise the integrity and security of the application.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, you can implement input validation to ensure that the data being processed by the decode_query_device_identification_resp function is properly sanitized and does not exceed expected lengths. This can help mitigate the risk of exploitation until a patch is applied.
Conclusion
The heap buffer overflow vulnerability in the nsmd package poses significant risks to applications utilizing this component. It is crucial to address this issue promptly by applying available patches and implementing necessary workarounds to safeguard against potential exploitation.
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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, leading to memory corruption and potential security vulnerabilities.
Exploitation of this vulnerability can lead to application crashes, unauthorized access to sensitive data, or even remote code execution, depending on the attacker's capabilities.
Yes, it is advisable to check the official nsmd repository for any available patches and update your package accordingly.
If immediate updates are not possible, implement input validation as a temporary workaround to minimize the risk of exploitation.
You can use tools like Vulert, which monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json. You can also check your application against known vulnerabilities using the Vulert playground.
References
Related vulnerabilities
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