netfilter: conntrack: re-fetch conntrack after insertion
Summary
GSD-2022-1003813: netfilter: conntrack: re-fetch conntrack after insertion. Affects Kernel versions >= 71d8c47fc653711c41bc3282e5b0e605b3727956, < b16bb373988da3ceb0308381634117e18b6ec60d. No fix is published. How to fix ↓
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Background
The netfilter conntrack module is a component of the Linux Kernel that provides connection tracking capabilities. It keeps track of network connections and their associated states, allowing the kernel to make informed decisions about packet filtering and network address translation. The conntrack module is an essential part of the Linux networking stack and is widely used in various network-related applications and services.
Vulnerability Detail
The netfilter conntrack module is vulnerable to a security issue that allows an attacker to bypass certain network security measures. Specifically, after inserting a new conntrack entry, the module fails to re-fetch the conntrack entry, potentially leading to incorrect connection tracking and subsequent security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet, but it is important to address this issue to ensure the integrity and security of network connections.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.197 or later. This fix was implemented in commit b16bb373988da3ceb0308381634117e18b6ec60d. Updating the kernel will ensure that the conntrack module correctly re-fetches conntrack entries after insertion, mitigating the vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The netfilter conntrack module in the Linux Kernel is vulnerable to a security issue that can potentially bypass network security measures. It is recommended to update the kernel to the latest version to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The netfilter conntrack module is a component of the Linux Kernel that provides connection tracking capabilities. It keeps track of network connections and their associated states, allowing the kernel to make informed decisions about packet filtering and network address translation.
This vulnerability can potentially bypass certain network security measures by allowing incorrect connection tracking. This could lead to security vulnerabilities and potential exploitation by attackers.
No, the impact and attack plausibility of this vulnerability have not been proven yet. However, it is still important to address this issue to ensure the integrity and security of network connections.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.197 or later. This fix was implemented in commit b16bb373988da3ceb0308381634117e18b6ec60d.
No specific workaround has been mentioned for this vulnerability.
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