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Heap Exploitation
glibc - ptmalloc
angelboy
Outline
• Heap overview
• Mechanism of glibc malloc
• Vulnerability of Heap
• Use after free
• Heap overflow
• using unlink...
Memory allocator
• dlmalloc – General purpose allocator
• ptmalloc2 – glibc
• jemalloc – Firefox
• tcmalloc – chrome
• …..
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