Further Analysis of the backdoor in XZ

The report provides an in-depth analysis of a sophisticated multi-stage backdoor implanted in the XZ compression utility a critical component integrated into many Linux distributions. The attackers employed advanced techniques including modifying the build infrastructure and hiding malicious scripts within test files ultimately introducing a remote code execution capability targeting sshd processes. The backdoor exhibited remarkable stealth and utilized intricate methods to evade detection underscoring the severity of this supply chain compromise.