Fuzzysecurity
fuzzysecurity.com › tutorials › expDev › 16.html
Part 12: Kernel Exploitation -> Null Pointer Dereference
Setup Just to clarify the general setup of our exploit, we will: (1) put our shellcode in memory somewhere, (2) allocate memory at the program's null page, (3) write the address of our shellcode at [IntPtr]0x00000004 and (4) trigger the null pointer dereference.
XPN Infosec Blog
blog.xpnsec.com › hevd-null-pointer
Exploiting Windows 10 Kernel Drivers - NULL Pointer Dereference - XPN Infosec Blog
This can be exploited if an application triggers a DeviceIoControl call, passing a value which does not match MagicValue, and then providing a function pointer at NULL (well, offset 0x4 or 0x8, but we’ll get to this later).
11:18
USENIX Security '24 - What IF Is Not Enough? Fixing Null Pointer ...
04:42
when a null pointer dereference breaks the internet lol - YouTube
Kernel Exploitation on HEVD #3 : Null Pointer Dereference
08:01
10 Avoiding Attempt to Dereference Null Object Errors - YouTube
00:43
SMBv3 NULL Pointer Dereference Vulnerability (CVE-2018-0833) - YouTube
OWASP Foundation
owasp.org › www-community › vulnerabilities › Null_Dereference
Null Dereference | OWASP Foundation
Most null pointer issues result in general software reliability problems, but if an attacker can intentionally trigger a null pointer dereference, the attacker might be able to use the resulting exception to bypass security logic or to cause the application to reveal debugging information that will be valuable in planning subsequent attacks.
Medium
medium.com › @chanibonner › a-beginners-guide-to-null-pointer-dereference-attacks-d3618cc8a493
A Beginner’s Guide to Null Pointer Dereference Attacks | by Chani Bonner | Medium
February 25, 2024 - Although this is less realistic, it would be similar to changing the street address and consequently changing the people and contents of the building. Incredibly, dereferencing does let you do the unimaginable. You can read or modify a variable directly by manipulating its pointer. Depending on the programming language in use, a null value can mean that a value or object does not exist.
FICS Research
fics.institute.ufl.edu › index.php › 2019 › 11 › 25 › null-pointer-dereferencing
NULL Pointer Dereferencing (CVE-2019-14604) - FICS Research
April 8, 2026 - As a consequence, when DMA module calls aclpci_release() to release pinned pages, it ends up dereferencing NULL pointers. The detailed error trace from kernel buffer is provided below for interested readers. In the cloud scenario, the severity of the vulnerability magnifies because it can be remotely exploited as well as it gives full control to the attacker to run any kind of malicious exploit.
Exploit-DB
exploit-db.com › docs › english › 43529-windows-kernel-exploitation-tutorial-part-5-null-pointer-dereference.pdf pdf
Menu Windows Kernel Exploitation Tutorial Part 5: NULL Pointer Dereference
January 12, 2018 - are not same, then the NullPointerDereference is being set to NULL. We can see that in the secure version, ... A short analysis in IDA shows the same non-paged pool with tag ‘Hack‘, our magic value, and an interesting · o×set of 0x4, which is where we’d be writing the pointer to our shellcode.
0x00sec
archive.0x00sec.org › exploit development
Kernel Exploitation | Dereferencing a NULL pointer! - Exploit Development - 0x00sec - The Home of the Hacker
October 10, 2017 - It will nullset the function pointer tostring_read, which is good for us! But, after setting it to null, we need to read from it, to cause it’s dereferencing, to do so, we will simply read the file, to trigger a call to tostring_read()! We are good, let’s start writting our exploit.
MITRE
cwe.mitre.org › data › definitions › 476.html
CWE - CWE-476: NULL Pointer Dereference (4.20)
Common Weakness Enumeration (CWE) is a list of software weaknesses.
HackerOne
hackerone.com › reports › 2171309
curl disclosed on HackerOne: NULL Pointer dereference in idn.c
## Summary: A NULL Pointer dereference vulnerability is present in idn.c source code. This module is responsible of handling international domain name. This issue was found performing manual source code review of Curl which took >20 hours. ## Steps To Reproduce: Find below a detailed and commented execution flow / code snippet explanation.
Slashdot
developers.slashdot.org › story › 10 › 04 › 13 › 1951246 › how-to-exploit-null-pointers
How To Exploit NULL Pointers - Slashdot
April 13, 2010 - As given, no the procedure is not a working exploit for any meaningful definition ("I'm teh 1337 hacks-zor! I r00ted my home desktop!") However, if you could identify a case where the kernel dereferenced a NULL function pointer, and if you could get around the kernel's mmap() protection (neither implausible), then you can get the kernel to run your code using its privilege level.
ImmuniWeb
immuniweb.com › vulnerability › null-pointer-dereference.html
NULL Pointer Dereference Vulnerability | CWE-476 Weakness | Exploitation and Remediation
December 28, 2020 - Since NULL pointer dereference errors mostly result in application crash, they are usually scored with availability impact only. A common CVSS score for locally exploitable vulnerability in client application would look like this: 2.1 ...
ResearchGate
researchgate.net › figure › Examples-of-null-pointer-dereference-vulnerability-a-indicate-the-dereference-to-the_fig1_352580731
Examples of null pointer dereference vulnerability, (a) indicate the... | Download Scientific Diagram
Null pointer dereference (NPD) ... null pointer. NPD vulnerability can be exploited by hackers to maliciously crash a process to cause a denial of service or execute an arbitrary code under specific conditions....
Afine
afine.com › home › blog › null pointer dereference on macos: exploitation history
NULL Pointer Dereference on macOS: Exploitation History
February 12, 2026 - But before that, a well-known example was Luca Todesco’s 2015 exploit targeting OS X Yosemite, who combined a NULL pointer dereference in IOKit with an info leak to gain root privileges. The exploit was called “tpwn” and is publicly available here.
Abatchy
abatchy.com › 2018 › 01 › kernel-exploitation-6
abatchy's blog | [Kernel Exploitation] 6: NULL pointer dereference
January 17, 2018 - Bottom line: vulnerability is not exploitable on our Windows 10 VM. If you really want to exploit it, enable NTVDM, then you’ll have to bypass SMEP (part 4 discussed this). ... Before we talk with the driver, we need to allocate our NULL page and put the address of the payload at 0x4.
Snyk Learn
learn.snyk.io › home › security education › what is a null dereference? | tutorial & examples
What is a null dereference? | Tutorial & examples | Snyk Learn
August 15, 2024 - ... The top occurrence Snyk found in 2022 was CVE-2020-29652 in golang.org/x/crypto/ssh. In this case, a NULL pointer dereference allows remote attackers to cause a denial of service against SSH servers.
SonicWall
sonicwall.com › blog › linux-kernel-ksmbd-null-pointer-dereference-vulnerability
Linux Kernel KSMBD NULL Pointer Dereference Vulnerability
The following application protocols can be used to deliver an attack that exploits this vulnerability: • SMB/CIFS · SonicWall's, (IPS) Intrusion Prevention System, provides protection against this threat: • IPS: 4022 Linux Kernel ksmbd NULL Pointer Dereference 1 • IPS: 19332 Linux Kernel ksmbd NULL Pointer Dereference 2 • IPS: 19333 Linux Kernel ksmbd NULL Pointer Dereference 3
Jsmon Blog
blogs.jsmon.sh › what-is-null-pointer-dereference-ways-to-exploit-examples-and-impact
What is Null Pointer Dereference? Ways to Exploit, Examples and Impact
March 9, 2026 - Modern operating systems have mitigated ... and legacy systems. Exploiting a null pointer dereference requires the attacker to control the environment around the crash....
Medium
thehacktivists.medium.com › null-pointer-dereference-cwe-476-the-hacktivists-d3ceb2a7ade1
NULL Pointer Dereference [CWE-476] — The Hacktivists | by The Hacktivists | Medium
March 13, 2021 - Since NULL pointer dereferences errors mostly result in application crash, they are usually scored with availability impact only. A common CVSS score for locally exploitable vulnerability in client application would look like this: 2.1 ...
Edxsecurityhub
edxsecurityhub.org › nullpointer
Null Pointer Dereference - Cybersecurity & Doxxing Hub
Below is a simulation of a Null Pointer Dereference attack. Click the button to see how an attacker exploits a Null Pointer Dereference vulnerability.