Null-dereferences might not be too exploitable on a lot of systems, what about the handling of a null-dereference. We cover a great Project Zero post on the topic, then look at a type confusion in Windows COM, a Nintendo buffer overflow, and several memory corruptions in git, highlighting their unique primitives and potential exploitability.

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/182.html

[00:00:00] Introduction

[00:01:14] Spot the Vuln - Resolution

[00:03:38] Exploiting null-dereferences in the Linux kernel

[00:15:31] Type confusion in Windows COM+ Event System Service [CVE-2022-41033]

[00:22:57] Information and PoC about the ENLBufferPwn vulnerability

[00:28:11] Git security vulnerabilities announced

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[binary] Exploiting Null Derefs and Windows Type COM-fusion 51:04 Share

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Shownotes Transcript

[binary] Exploiting Null Derefs and Windows Type COM-fusion