Stack Out-of-Bounds Read Vulnerability in openvswitch
Summary
GSD-2021-1000072: openvswitch: fix stack OOB read while fragmenting IPv4 packets. Affects Kernel versions >= d52e5a7e7ca49457dd31fc8b42fb7c0d58a31221, < b3502b04e84ac5349be95fc033c17bd701d2787a. No fix is published. How to fix ↓
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Background
Openvswitch is a software-based virtual switch that is commonly used in virtualization environments. It provides network connectivity between virtual machines and physical networks. The vulnerability in openvswitch allows for a stack out-of-bounds read while fragmenting IPv4 packets.
Vulnerability Detail
The vulnerability in openvswitch arises when fragmenting IPv4 packets. It results in a stack out-of-bounds read, which can potentially lead to information disclosure or a denial of service. An attacker could exploit this vulnerability by sending specially crafted IPv4 packets to a vulnerable system. The issue was introduced in version v4.16 of the Linux Kernel and was fixed in version v5.12.3.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel.
Conclusion
The stack out-of-bounds read vulnerability in openvswitch while fragmenting IPv4 packets can have serious security implications. It is crucial to update the Linux Kernel to version v5.12.3 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Openvswitch is a software-based virtual switch used in virtualization environments to provide network connectivity between virtual machines and physical networks.
The vulnerability allows for a stack out-of-bounds read, which can potentially lead to information disclosure or a denial of service.
An attacker can exploit this vulnerability by sending specially crafted IPv4 packets to a vulnerable system.
The vulnerability was introduced in version v4.16 of the Linux Kernel and was fixed in version v5.12.3.
No, there is no known workaround. It is necessary to update the Linux Kernel to fix the vulnerability.
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