Flipped Sign Vulnerability in net/tls Package in Linux Kernel
Summary
GSD-2021-1002120: net/tls: Fix flipped sign in tls_err_abort() calls. Affects Kernel versions >= c46234ebb4d1eee5e09819f49169e51cfc6eb909, < e41473543f75f7dbc5d605007e6f883f1bd13b9a. No fix is published. How to fix ↓
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Background
The net/tls package is a component of the Linux Kernel that provides Transport Layer Security (TLS) functionality for network communication. TLS is a cryptographic protocol that ensures secure communication over a network. It is widely used to protect sensitive data transmitted between clients and servers. The net/tls package in the Linux Kernel is responsible for implementing TLS support in the kernel. This vulnerability affects the net/tls package in the Linux Kernel.
Vulnerability Detail
The vulnerability in the net/tls package is due to a flipped sign in the tls_err_abort() function calls. This flaw was introduced in version v4.17 of the Linux Kernel and fixed in version v5.14.16. An attacker could exploit this vulnerability to cause a denial-of-service (DoS) condition or potentially execute arbitrary code. By manipulating the flipped sign, an attacker may be able to trigger a buffer overflow or other memory corruption issues, leading to a system crash or arbitrary code execution.
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 recommended to apply the official fix by updating the Linux Kernel to the latest version.
Conclusion
The flipped sign vulnerability in the net/tls package in the Linux Kernel can potentially lead to a denial-of-service (DoS) condition or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.14.16 or later to mitigate this vulnerability. Regularly updating the kernel is essential to ensure the latest security patches and fixes are applied. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The net/tls package is responsible for implementing Transport Layer Security (TLS) support in the Linux Kernel. It provides cryptographic protocols for secure communication over a network.
This vulnerability could lead to a denial-of-service (DoS) condition or potentially allow an attacker to execute arbitrary code. By exploiting the flipped sign issue, an attacker may be able to trigger memory corruption or buffer overflow issues.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.16 or later. This fix addresses the flipped sign issue in the tls_err_abort() function calls.
There is no known workaround for this vulnerability. It is recommended to apply the official fix by updating the Linux Kernel to the latest version.
Users can obtain the updated Linux Kernel from the official Linux Kernel repository. It is important to regularly update the kernel to ensure the latest security patches and fixes are applied.
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