Out of Bounds Vulnerability in mptcp Package
Summary
GSD-2021-1001062: mptcp: Fix out of bounds when parsing TCP options. Affects Kernel versions >= cec37a6e41aae7bf3df9a3da783380a4d9325fd8, < 76e02b8905d0691e89e104a882f3bba7dd0f6037. No fix is published. How to fix ↓
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Background
The mptcp package is a component of the Linux Kernel ecosystem. It provides support for Multipath TCP (MPTCP), which allows a single TCP connection to use multiple paths simultaneously. This feature enhances network reliability, performance, and resilience. However, a vulnerability has been discovered in the package that can lead to out of bounds access when parsing TCP options.
Vulnerability Detail
The vulnerability in the mptcp package occurs when parsing TCP options. It can result in out of bounds access, potentially leading to memory corruption or information disclosure. An attacker could exploit this vulnerability to execute arbitrary code or crash the system. The vulnerability was introduced in version v5.6 of the Linux Kernel and has been fixed in version v5.12.13.
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 out of bounds vulnerability in the mptcp package can have severe consequences, including arbitrary code execution and system crashes. It is crucial to update the Linux Kernel to version v5.12.13 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially allow an attacker to execute arbitrary code or crash the system by exploiting the out of bounds access issue in the mptcp package.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time monitoring and alerts for open-source vulnerabilities.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the recommended fix to mitigate any potential risks.
The recommended mitigation is to update the Linux Kernel to version v5.12.13 or later, which includes the necessary patch to address the vulnerability.
You can find more information about this vulnerability in the GSD-2021-1001062 entry of the GSD Database maintained by the Cloud Security Alliance. The entry can be accessed at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001062.json
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