erspan: Do Not Assume Transport Header is Always Set
Summary
GSD-2022-1004265: erspan: do not assume transport header is always set. Affects Kernel versions >= d5db21a3e6977dcb42cee3d16cd69901fa66510a, < 2c8aeffc7c586d53e1d380f010bdca4f710f2480. No fix is published. How to fix ↓
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Background
The erspan package is a component of the Linux Kernel, which is responsible for handling ERSPAN (Encapsulated Remote Switched Port Analyzer) traffic. ERSPAN is a network protocol used for remote packet capture and analysis. It allows network administrators to monitor traffic on remote switches or routers. The erspan package provides the necessary functionality to encapsulate and decapsulate ERSPAN packets.
The vulnerability identified in the erspan package arises from an incorrect assumption made regarding the presence of the transport header. This assumption can lead to potential security vulnerabilities.
Vulnerability Detail
The vulnerability in the erspan package occurs when it assumes that the transport header is always set. This assumption can be exploited by an attacker to manipulate the behavior of the system. By sending specially crafted ERSPAN packets with missing or modified transport headers, an attacker may be able to bypass security measures or cause the system to behave unexpectedly.
The impact and attack plausibility of this vulnerability have not yet been proven, but it is important to address it to ensure the security and stability of systems utilizing the erspan package.
The vulnerability was introduced in version v4.18 of the Linux Kernel and has been fixed in version v5.18.8.
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. However, it is recommended to apply the fix by updating the Linux Kernel as mentioned in the 'how_to_fix' section.
Conclusion
The erspan package in the Linux Kernel is vulnerable to an issue related to incorrect assumptions about the presence of the transport header. This vulnerability can potentially be exploited by attackers to manipulate system behavior or bypass security measures. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.18.8 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The erspan package is a component of the Linux Kernel that handles ERSPAN traffic, allowing network administrators to remotely capture and analyze network packets.
ERSPAN (Encapsulated Remote Switched Port Analyzer) is a network protocol used for remote packet capture and analysis. It enables network administrators to monitor traffic on remote switches or routers.
The impact of this vulnerability is not yet proven, but it has the potential to be exploited by attackers to manipulate system behavior or bypass security measures.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.18.8 or later, which includes the necessary patches to address the issue.
There is no specific workaround mentioned for this vulnerability. It is best to apply the fix by updating the Linux Kernel.
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