This analytic rule aims to detect a heap-based buffer overflow vulnerability within the 'sudoedit' component of the sudo utility as indicated by CVE-2021-3156. By monitoring Linux logs, the rule specifically searches for the combination of the terms 'sudoedit' and 'segfault', which suggests that the sudoedit process is experiencing a segmentation fault. The Splunk-based detection mechanism counts occurrences of these terms on a single host, triggering an alert if there are more than five instances within a predefined timeframe. This behavior is critical, as successfully exploiting this vulnerability can enable attackers to escalate their privileges to root level, potentially resulting in unauthorized access, data breaches, and overall system compromise. The implementation is designed to capture both direct invocations of sudoedit that lead to segfaults and possible scenarios where malicious code could be compiled into a binary that exploits this weakness. Such incidents pose significant risks that need to be monitored and addressed.