netfilter: nft_ct: skip expectations for confirmed conntrack in Kernel
Summary
GSD-2021-1000767: netfilter: nft_ct: skip expectations for confirmed conntrack. Affects Kernel versions >= 857b46027d6f91150797295752581b7155b9d0e1, < 5f3429c05e4028a0e241afdad856dd15dec2ffb9. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and serves as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the security and stability of the system. The netfilter subsystem within the Kernel is responsible for packet filtering, network address translation (NAT), and other network-related operations. This vulnerability specifically affects the nft_ct module within netfilter.
Vulnerability Detail
The netfilter nft_ct module in the Kernel is vulnerable to a security issue that allows expectations to be skipped for confirmed conntrack. This vulnerability was introduced in version v5.3 of the Kernel and was fixed in version v5.10.43. An attacker could potentially exploit this vulnerability to bypass certain network security measures and perform unauthorized actions. The impact and attack plausibility of this vulnerability have not been proven yet.
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 netfilter nft_ct module in the Kernel is vulnerable to a security issue that allows expectations to be skipped for confirmed conntrack. It is recommended to update the Kernel to version v5.10.43 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The netfilter subsystem in the Kernel is responsible for packet filtering, network address translation (NAT), and other network-related operations. It provides a framework for implementing firewall functionality and controlling network traffic.
This vulnerability could potentially allow an attacker to bypass certain network security measures and perform unauthorized actions. However, the actual impact and attack plausibility have not been proven yet.
This vulnerability was introduced in version v5.3 of the Kernel and was fixed in version v5.10.43.
To fix this vulnerability, it is recommended to update the Kernel to version v5.10.43 or later. This can be done by obtaining the latest version of the Kernel source code from the official repository and compiling it according to the provided instructions.
There is no specific workaround mentioned for this vulnerability.
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