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Microsoft Threat Intelligence Podcast
Behind the Scenes of the XZ vuln with Andres Freund and Thomas Roccia
May 8, 2024
Andres Freund and Thomas Roccia discuss discovering a backdoor in the XZ package, emphasizing proactive security measures and code review in open source. They highlight the importance of community collaboration in identifying and mitigating security threats effectively.
33:21
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Quick takeaways
- Proactive security and code review are essential in the open-source community to detect sophisticated backdoors like in the XZ library.
- Anomalies in software behavior should be investigated promptly as they could indicate hidden threats, emphasizing the need for community cooperation in threat identification.
Deep dives
Discovery of the Backdoor in XZ Library
Andreas Freund discovered a backdoor in the XZ library hidden in the LZMA library, impacting systems using open Ssh.H code. Despite its obfuscation, erratic CPU usage led to its detection during a profiling exercise. The backdoor's stealthy behavior raised red flags only during idle periods, evading notice on most systems.
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Discover
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