Understanding the Critical OpenSSH Vulnerability (CVE-2024–6387): RegreSSHion

Introduction

In a significant development for cybersecurity, a critical vulnerability has been identified in OpenSSH, dubbed “RegreSSHion” (CVE-2024–6387). This vulnerability is a regression of a previously patched issue from 2006, resurfacing with potentially devastating effects. The vulnerability affects OpenSSH versions 8.5p1 to 9.8p1 on glibc-based Linux systems, enabling attackers to execute arbitrary code with root privileges.

The Vulnerability Explained

RegreSSHion is a signal handler race condition in the OpenSSH server (sshd). This flaw arises when …

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