NFSD: Integer Overflow Vulnerability in Linux Kernel
Summary
GSD-2022-1002278: NFSD: prevent integer overflow on 32 bit systems. Affects Kernel versions < ce1aa09cc14ed625104acc2d487bd92b9a88efe2. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing essential services. It is a critical piece of software that enables the functioning of various applications and services on Linux-based systems. The Network File System (NFSD) is a component of the Linux Kernel that allows remote file access over a network.
The NFSD component is vulnerable to an integer overflow on 32-bit systems. This vulnerability can potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition. The vulnerability arises due to a lack of proper input validation, which allows an attacker to provide malicious input that triggers the integer overflow.
This vulnerability has been assigned the ID GSD-2022-1002278 and has been fixed in Linux Kernel version v5.4.189 by commit ce1aa09cc14ed625104acc2d487bd92b9a88efe2.
Vulnerability Detail
The integer overflow vulnerability in NFSD on 32-bit systems can lead to various security issues. An attacker can exploit this vulnerability by providing specially crafted input that triggers the integer overflow. This can result in the execution of arbitrary code with elevated privileges or the crashing of the NFSD component, leading to a denial-of-service condition.
The vulnerability is caused by a lack of proper input validation, allowing an attacker to provide input that exceeds the maximum value that can be stored in a 32-bit integer. This leads to an overflow, which can have unintended consequences such as memory corruption or incorrect calculations.
To exploit this vulnerability, an attacker would need to have network access to the affected system and send malicious requests to the NFSD component. Successful exploitation of this vulnerability can have severe consequences, including unauthorized access to sensitive data or disruption of critical services.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The integer overflow vulnerability in NFSD on 32-bit systems poses a significant security risk. It is crucial to update the Linux Kernel to the fixed version to mitigate this vulnerability. Failure to do so may result in unauthorized access to sensitive data or disruption of critical services. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can be severe, potentially allowing an attacker to execute arbitrary code or cause a denial-of-service condition. This can lead to unauthorized access to sensitive data or disruption of critical services.
This vulnerability affects 32-bit systems running the Linux Kernel with the NFSD component enabled.
No, there is no known workaround for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
There is no information available regarding exploitation of this vulnerability in the wild. However, it is important to apply the necessary updates to mitigate the risk.
For more information about this vulnerability, refer to the provided references link in the vulnerability details section.
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