NFSv4: Initialise connection to the server in nfs4_alloc_client() - Kernel
Summary
GSD-2021-1001385: NFSv4: Initialise connection to the server in nfs4_alloc_client(). Affects Kernel versions >= 5c6e5b60aae4347223f176966455010a5715b863, < 743f6b973c8ba8a0a5ed15ab11e1d07fa00d5368. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and interfaces between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the security and stability of the system. The NFSv4 protocol is used for network file sharing in Linux, allowing remote access to files and directories. The nfs4_alloc_client() function is responsible for initializing the connection to the NFSv4 server.
Vulnerability Detail
The vulnerability identified as GSD-2021-1001385 in the Kernel's nfs4_alloc_client() function could potentially lead to security breaches. The issue arises from a lack of proper initialization of the connection to the NFSv4 server. Attackers may exploit this vulnerability to gain unauthorized access to sensitive data, execute arbitrary code, or disrupt the normal functioning of the system. It is crucial to address this vulnerability promptly to mitigate the risk of exploitation.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can disable the NFSv4 protocol or block access to NFSv4 services from external networks. This can be achieved by modifying the system's firewall rules or configuration settings. However, it is important to note that this workaround may impact the functionality of NFSv4-based services and should only be considered if immediate patching is not feasible.
Conclusion
The vulnerability in the Kernel's nfs4_alloc_client() function poses a potential security risk that could lead to unauthorized access, code execution, or system disruption. It is crucial to update the Kernel to the patched version or apply the recommended workaround to mitigate the vulnerability. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
This vulnerability could potentially allow attackers to gain unauthorized access to sensitive data, execute arbitrary code, or disrupt the normal functioning of the system.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, no known exploits for this vulnerability have been reported. However, it is crucial to address the issue promptly to prevent potential exploitation.
As a temporary measure, you can disable the NFSv4 protocol or block access to NFSv4 services from external networks. However, it is strongly recommended to update the Kernel to the patched version as soon as possible.
You can find more information about this vulnerability, including technical details and the patch, in the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the vulnerability database maintained by the Cloud Security Alliance (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001385.json).
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
