All Questions
Tagged with stack-overflow c
383 questions
0
votes
1
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60
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cannot launch shell (overflow attack example)?
I am trying this example from the all time classic Smashing The Stack For Fun And Profit
https://www.cs.cornell.edu/courses/cs513/2005fa/paper.alpeh1.stacksmashing.html
testsc.c
char shellcode[] =
...
1
vote
1
answer
93
views
Local variable allocation crashes the stack in embedded C on cortexm4 and operating system
Details: embedded C, cortex M4 with operating system (RTX Kernel), compiled with ARM Compiler V5.06 update6 and Microlib.
Inside a periodic task there are some functons call, one is a debug function:
/...
- 317
0
votes
1
answer
106
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Is out-of-scope local variables' memory reused?
struct Big { char data[5000]; };
extern int some_input;
int main() {
switch (some_input) {
case 0: {
struct Big big;
big.data[0] = 0; // just try to do something
...
3
votes
0
answers
96
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Buffer Overflow Exploit to Redirect Execution to Another Function Causes Segmentation Fault
I am working on a security engineering assignment where I need to create a buffer overflow exploit to change the execution flow of a C program. The goal is to overwrite the return address and redirect ...
- 31
0
votes
1
answer
83
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Shellcode stub got exited right after executed in Buffer Overflow Exploitation
I am currently playing around with some exploitation techniques in 64-bit Intel executable. My program was compiled with canary protection disabled (-fno-stack-protector), buffer overflow error ...
- 13
0
votes
3
answers
192
views
How to recover midstream from a stack buffer overrun
This question is out of my expertise. How do you recover, midstream, from a stack overflow overrun in "C"?
Where you are using a character variable declared as char string[12], and you move ...
- 31
-1
votes
1
answer
89
views
How to predict a stack overflow? How and which memory is stored in stack? [closed]
I implemented a floodfill recursive function to check if a player will be able to reach the map exit or it'll be stacked surrounded by walls. So a simple map would look like this:
111111111
100010C01
...
- 45
0
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0
answers
41
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Ran on an MCU (STM32F1), doubly-linked list code results in a call of HardFault() due to stack overflow
So there is code that is supposed to poll a GPIO read pin at a certain rate and put the SET/RESET result to a doubly linked list of 16 elements, deleting the first added (firstIn) element. formArray() ...
- 1
3
votes
1
answer
216
views
Strange size change in core dump file
I have the following C snippets that both obviously cause stack overflow error:
a.c
int f(int i) {
f(i);
}
int main() {
f(1);
}
b.c
int f(int i) {
f(i+1);
}
int main() {
f(1);
}
...
- 2,460
1
vote
2
answers
187
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Prevent stack memory usage for recursive function in C
This C code does DBSCAN - Density-based spatial clustering of applications with noise. It's a cluster algorithm for turining unsupervised (no labels) data to become supervised (labels e.g class number)...
- 2,856
-2
votes
2
answers
141
views
Stack overflow in a recursive function
I have two functions, I could get rid of the one that makes the mistake, but I don't really want to rewrite almost all my code away, so I need to fix that in any other way.
int Reveal(char*** arr, int*...
- 9
1
vote
0
answers
116
views
statfs attempting large write causing stack overflow
I'm currently using statfs to get some information about a path and I'm getting a runtime stack overflow error:
==33949==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x000103d3d970 at pc ...
1
vote
1
answer
90
views
Loop error leads to stack buffer overflow in C
It is part of the assignment.
Basically, there should be "These are not Palindromes!" or "These are Palindromes!" coming out, but whenever I run it and input chars (though it ...
- 29
0
votes
1
answer
138
views
what's causing a stack overflow?
I've been following along this article that creates an icosahedron and subdivide it into an icosphere to use for a game i'm making that i decided to try and port over to C from C#. But when i finished ...
- 17
3
votes
1
answer
109
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Understanding of return address calculation from Hacking: the art of exploitation?
The program is shown in the similar thread here.
Let's assume that my OS doesn't implement ASLR or other protections from buffer overflow.
Long story short, the author is spawning a child process from ...
- 107