Vulnerability in Kernel: mptcp - Correctly set DATA_FIN timeout when number of retransmits is large
Summary
GSD-2022-1000695: mptcp: Correctly set DATA_FIN timeout when number of retransmits is large. Affects Kernel versions >= 6477dd39e62c3a67cfa368ddc127410b4ae424c6, < 03ae283bd71f761feae3f402668d698b393b0e79. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The mptcp module in the Kernel enables the use of Multipath TCP, which allows for the simultaneous use of multiple network paths for a single TCP connection. This feature improves performance, reliability, and resilience in certain network scenarios. However, a vulnerability has been identified in the mptcp module that affects the correct setting of the DATA_FIN timeout when the number of retransmits is large.
Vulnerability Detail
The vulnerability in the mptcp module arises from an incorrect setting of the DATA_FIN timeout when there are a significant number of retransmits. This can lead to a delay in the termination of TCP connections, potentially causing performance degradation and resource exhaustion. An attacker could potentially exploit this vulnerability to launch denial-of-service attacks or disrupt network communications. The vulnerability was introduced in Kernel version v5.13 and has been fixed in version v5.16.13 by commit 03ae283bd71f761feae3f402668d698b393b0e79.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. It is advised to apply the fix by updating the Kernel to the recommended version.
Conclusion
The vulnerability in the mptcp module of the Kernel can lead to delayed termination of TCP connections and potential performance degradation. It is crucial to update the Kernel to version v5.16.13 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can result in delayed termination of TCP connections, leading to potential performance degradation and resource exhaustion. It may also be exploited by attackers to launch denial-of-service attacks or disrupt network communications.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
Yes, a patch has been released in Kernel version v5.16.13. It is recommended to update the Kernel to this version or a later one to fix the vulnerability.
The recommended approach is to update the Kernel to the fixed version. However, if updating is not immediately feasible, you can consider implementing additional network-level security measures, such as firewall rules or network traffic monitoring, to detect and mitigate potential attacks exploiting this vulnerability.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000695.json) for more information about this vulnerability, including its technical details and references.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
