In the context of a stack overflow vulnerability in the "edit" function, allowing control over exception handling, it becomes possible to manipulate the value of RBP. Moreover, within the catch block, the address 0000000000402E2C performs a write operation on the memory pointed to by RBP. Hence, leveraging this characteristic, one can modify the lower bits of the "ptrs" pointer to position it under control. This manipulation facilitates arbitrary address read and write operations.
.text:0000000000402E16 ; catch(std::exception) // owned by 402DC0
.text:0000000000402E16 cmp rdx, 1
.text:0000000000402E1A jz short loc_402E24
.text:0000000000402E1C mov rdi, rax ; struct _Unwind_Exception *
.text:0000000000402E1F call __Unwind_Resume
.text:0000000000402E24 ; ---------------------------------------------------------------------------
.text:0000000000402E24
.text:0000000000402E24 loc_402E24: ; CODE XREF: main+11D↑j
.text:0000000000402E24 mov rdi, rax ; void *
.text:0000000000402E27 call ___cxa_begin_catch
.text:0000000000402E2C mov [rbp+e], rax