netfilter: conntrack: re-fetch conntrack after insertion
Summary
GSD-2022-1004025: netfilter: conntrack: re-fetch conntrack after insertion. Affects Kernel versions >= 71d8c47fc653711c41bc3282e5b0e605b3727956, < e97222b785e70e8973281666d709baad6523d8af. No fix is published. How to fix ↓
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Background
The netfilter package is a component of the Linux Kernel that provides network packet filtering functionality. It is responsible for managing the stateful tracking of network connections. The conntrack module within netfilter keeps track of connection information, such as source and destination IP addresses and ports. This vulnerability affects the conntrack module and its ability to correctly fetch connection information after insertion.
Vulnerability Detail
The vulnerability in the conntrack module arises from a failure to properly re-fetch connection information after insertion. This can lead to incorrect or inconsistent connection tracking, potentially allowing malicious actors to bypass firewall rules or perform unauthorized network activities. The vulnerability was introduced in version v4.7 of the Linux Kernel and has been fixed in version v4.14.282. The impact and attack plausibility of this vulnerability have not yet 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 netfilter conntrack module in the Linux Kernel is vulnerable to a flaw that may allow unauthorized network activities. It is recommended to update the Kernel to version v4.14.282 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The netfilter package is a component of the Linux Kernel that provides network packet filtering functionality.
The conntrack module is a part of netfilter that keeps track of connection information, such as source and destination IP addresses and ports.
The impact of this vulnerability is not yet proven, but it could potentially allow malicious actors to bypass firewall rules or perform unauthorized network activities.
To fix this vulnerability, update the Linux Kernel to version v4.14.282 or later.
No specific workaround has been mentioned for this vulnerability.
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