netfilter: nf_dup_netdev: do not push mac header a second time
Summary
GSD-2022-1004263: netfilter: nf_dup_netdev: do not push mac header a second time. Affects Kernel versions >= f87b9464d152f7705f1e37288dc48f5af6a2fc0c, < e70598d1576928fd9d56dd544d41ae694ab0818a. No fix is published. How to fix ↓
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Background
The netfilter package is a part of the Linux Kernel ecosystem. It provides a framework for packet filtering and network address translation. The nf_dup_netdev function is responsible for duplicating packets to multiple network devices. This vulnerability specifically affects the nf_dup_netdev function and its handling of the MAC header.
Vulnerability Detail
The vulnerability in nf_dup_netdev allows for the duplication of the MAC header, resulting in the header being pushed a second time. This can lead to unexpected behavior and potential security issues. The vulnerability was introduced in Linux Kernel version v5.17 and fixed in v5.18.8. The impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The nf_dup_netdev vulnerability in the netfilter package can potentially lead to security issues. It is recommended to update the Linux Kernel to version v5.18.8 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
Netfilter is a packet filtering framework in the Linux Kernel that allows for the manipulation and filtering of network packets.
nf_dup_netdev is a function in the netfilter package that duplicates packets to multiple network devices.
The impact of this vulnerability is not yet proven, but it could potentially lead to unexpected behavior and security issues.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and it will provide real-time monitoring and alerts for open-source vulnerabilities.
You can find more information about this vulnerability in the Open Source Vulnerability Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004263.json).
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