netfilter: Use get_random_u32 instead of prandom
Summary
GSD-2022-1004477: netfilter: use get_random_u32 instead of prandom. Affects Kernel versions >= 6b2faee0ca91b63bd5a3b2087d4f25c76b983961, < d0906b0fffc9f19bc42708ca3e84e2089088386c. No fix is published. How to fix ↓
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Background
The netfilter package is a component of the Linux Kernel that provides a framework for packet filtering and network address translation. It is responsible for implementing firewall functionality and controlling network traffic. The package includes various modules, such as iptables and ip6tables, which allow users to define rules for filtering and manipulating network packets. This vulnerability affects the netfilter package in the Linux Kernel.
Vulnerability Detail
The vulnerability in the netfilter package arises from the use of the prandom function instead of the more secure get_random_u32 function. The prandom function generates pseudo-random numbers, which may be predictable and susceptible to cryptographic attacks. By leveraging this vulnerability, an attacker could potentially guess or manipulate the generated random numbers, leading to security breaches or unauthorized access to the network. This vulnerability was introduced in version v5.6 of the Linux Kernel and has been fixed in version v5.15.51.
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 package in the Linux Kernel is vulnerable to a security issue that arises from the use of the prandom function. To mitigate this vulnerability, it is recommended to update the Kernel to version v5.15.51 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Netfilter is a component of the Linux Kernel that provides packet filtering and network address translation functionality.
This vulnerability could potentially lead to security breaches or unauthorized access to the network.
To fix this vulnerability, update the Linux Kernel to version v5.15.51 or later.
This vulnerability was introduced in version v5.6 of the Linux Kernel.
Yes, this vulnerability has been fixed in version v5.15.51 of the Linux Kernel.
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