CVE-2021-45423 Information

Description

A Buffer Overflow vulnerabilityexists in Pev 0.81 via the pe_exports function from exports.c.. The array offsets_to_Names is dynamically allocated on the stack using exp->NumberOfFunctions as its size. However the loop uses exp->NumberOfNames to iterate over it and set its components value. Therefore the loop code assumes that exp->NumberOfFunctions is greater than ordinal at each iteration. This can lead to arbitrary code execution.

Reference

https://github.com/merces/libpe/issues/35