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Advisories

Ghidra < 12.1 - Heap-use-after-free in HighVariable::merge() during decompilation

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severity
medium
date
Affecting

  • Ghidra < 12.1

CWE
  • CWE-416 Use After Free
CVSS
4.6
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
Apple Security Engineering and Architecture (SEAR)
Description
Ghidra before 12.1 contains a heap-use-after-free vulnerability in the decompiler's HighVariable::merge() function during the variable merging pass. Attackers can trigger this vulnerability by crafting a binary that causes stale pointers in the HighIntersectTest::highedgemap cache to be dereferenced, reading and writing the flags field of freed heap memory when a user opens the binary in Ghidra's decompiler view.

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