The Snyk Security Labs team conducted an extensive study into the Docker engine, uncovering four high-severity vulnerabilities (CVE-2024-21626, CVE-2024-23651, CVE-2024-23652, and CVE-2024-23653) that enable attackers to escape container environments. These findings revealed critical flaws in the Docker engine's handling of file systems and mounts, where race conditions were exploited to breach container isolation and access the host system. The research highlighted the use of the Linux tool "strace" to track system calls and identify vulnerabilities in userland applications, emphasizing the need for proper validation and handling of resources to prevent such exploits. By demonstrating the vulnerabilities through detailed proof-of-concept examples, the researchers showcased the potential for container escape, which poses significant security risks to both build and production environments. The team proposed mitigations, including proper use of file descriptors and improved validation techniques, to address these vulnerabilities and enhance Docker's security posture.