mptcp: Fix Data Stream Corruption in Kernel
Summary
UVI-2021-1000591: mptcp: fix data stream corruption. Affects Kernel versions >= 18b683bff89d46ace55f12d00c0440d44d6160c4, < 3267a061096efc91eda52c2a0c61ba76e46e4b34. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionalities for the proper functioning of the system. The vulnerability in question affects the Kernel's implementation of the Multipath TCP (MPTCP) protocol, which allows for the simultaneous use of multiple network paths for a single TCP connection. This vulnerability can lead to data stream corruption, potentially compromising the integrity and reliability of network communications.
Vulnerability Detail
The vulnerability arises from a flaw in the MPTCP implementation within the Kernel. It can be exploited by an attacker to manipulate data streams, leading to corruption and potential data loss. The impact of this vulnerability can vary depending on the specific use case and the sensitivity of the data being transmitted. However, it has the potential to disrupt network communications, compromise data integrity, and potentially enable further attacks. The vulnerability was introduced in Kernel version v5.7 and has been fixed in version v5.10.42.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Kernel, applying the update is the recommended solution. However, if updating the Kernel is not immediately feasible, users can consider implementing network-level mitigations such as firewall rules or network segmentation to minimize the potential impact of the vulnerability. It is important to note that these workarounds may not provide complete protection and should be seen as temporary measures until the Kernel update can be applied.
Conclusion
The vulnerability in the MPTCP implementation within the Linux Kernel can lead to data stream corruption and potential compromise of network communications. It is crucial to update the Kernel to version v5.10.42 or later to mitigate this vulnerability. Applying network-level mitigations can provide temporary protection until the update can be applied. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to data stream corruption, potentially compromising the integrity and reliability of network communications. It may result in data loss, disruption of network services, and potential exposure to further attacks.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.42 or later. This update includes the necessary patch to address the MPTCP data stream corruption issue.
If updating the Kernel is not immediately feasible, users can consider implementing network-level mitigations such as firewall rules or network segmentation to minimize the potential impact of the vulnerability.
The vulnerability was introduced in Kernel version v5.7 and has been fixed in version v5.10.42. Therefore, versions between v5.7 and v5.10.41 are affected.
For more information about this vulnerability, including technical details and the specific fix implemented, please refer to the references provided in the vulnerability report.
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