Gdb remote returned error e08

Question

I am developing an iphone application that uses the OAuth-Consumer library, my current LLDB debugger identifier is this, it uses the following method to create a signauture

-(NSString *)signClearText:(NSString *)text withSecret:(NSString *)secret { //it generates base64EncodedData and then returns it as a string return base64EncodedResult;//this is line is executed successfully }//when it reaches this line it again goes to the return statement and there app crashes //with the gdb error 

If I use NSLog immediately before the return statement, it successfully prints the value of base64EncodeResult.

I tried another GDB debugger, but the application crashes with the error "it is impossible to access memory in location 0xYYYYYYY"

when I didn’t try the debugger, the application does not crash, but it stops running further ...

Answer 1

If you have a buffer overflow on a local variable, it may flush the stack frame. If this happens, you can rewrite the return address of the stack so that the application returns to the wrong address.