Collaborate Disseminate
I was trying to solve the Buffer Overflow SetUID lab but stuck in Task 6: L4, to perform the attack when the Buffer Size is small 10.
I understood that since len(shellcode) would be larger the shellcode would not fit in the buffer size, an… Continue reading Buffer Overflow Attack when size of Buffer is small on 64bit CPU architecture
I’m researching Buffer Overflow attacks, and while the web is full of various types of resources for Stack-Based Overflow attacks, the same can’t be said for Heap-Based ones.
Most articles I find only explain generally how the Heap works, … Continue reading Where to learn about Heap-Based Overflow Attacks under Linux?
By Waqas
Dubbed Looney Tunables; the vulnerability has existed since its introduction in April 2021, putting a significant number of systems at risk.
This is a post from HackRead.com Read the original post: Linux Vulnerability Exposes Millions of Syste… Continue reading Linux Vulnerability Exposes Millions of Systems to Attack
I currently got interested in binary exploitation (even though I do not know if today is still useful).
I started studying shellcode and buffer overflow (stack-buffer overflow, specifically). I know that this vulnerability is nowadays rare… Continue reading Unable to execute shellcode on x86_64 architecture
The program I am working with has a POC published for it, but not a full explanation. I have been told by my mentor (I am part of a research program) to disclose as little information as possible about the exploit.
The program is ran on Ka… Continue reading Specifying an integer within the maximum of an unsigned 64-bit integer does **not** cause a buffer overflow
Here’s the output:
pwndbg> p give_shell
$5 = {void ()} 0x8049217 <give_shell>
So if I write this payload python2 -c "print ‘A’*104 + ‘\x1B\x92\x04\x08’ + ‘\x17\x92\x04\x08’" > fatman
and run the program in gdb with … Continue reading Buffer Overflow not working. Don’t know why?
So I try to understand stack based buffer-overflow but now I am stuck. This is the vulnerable function (32 bit ELF).
int test(char* input)
{
char buf[100];
printf("Buffer is at %p\n", &buf); // leak helper
strcpy(… Continue reading bufferoverflow chars gets replaced on stack [closed]
I’m looking for a way to exploit CVE-2019-11500. Here’s how it’s described: In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for strings in quotes. This happens because the ‘… Continue reading Help creating an exploit for CVE-2019-11500
I am new to bufferoverflow and was told that this code can lead to a buffer overflow.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/sha.h>
#include <stdbool.h>
#include <unist… Continue reading Anyone can help with this buffer ovewrflow (ctf) question?
this is my first time posting a question here, so forgive me if I don’t give enough details. I will provide any extra details that are requested.
Basically, I’m practicing a buffer overflow, and I’m getting this weird segfault only when th… Continue reading Program segfaults when ran with GDB