CVE-2021-42521
VTK NULL Pointer Dereference Vulnerability
Description
There is a NULL pointer dereference vulnerability in VTK before 9.2.5, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.
INFO
Published Date :
Aug. 25, 2022, 6:15 p.m.
Last Modified :
Nov. 7, 2023, 3:39 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-42521.
| URL | Resource |
|---|---|
| https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549 | |
| https://gitlab.kitware.com/vtk/vtk/issues/17818 | Exploit Issue Tracking Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-42521 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-42521 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Fedora Project https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/ [No types assigned] Removed Reference Fedora Project https://lists.fedoraproject.org/archives/list/[email protected]/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/ -
CVE Modified by [email protected]
May. 11, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 02, 2023
Action Type Old Value New Value Changed Description There is a NULL pointer dereference vulnerability in VTK, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application. There is a NULL pointer dereference vulnerability in VTK before 9.2.5, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application. Added Reference https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549 [No Types Assigned] -
CVE Source Update by [email protected]
Dec. 21, 2022
Action Type Old Value New Value Changed CVE Elastic Fedora Project -
Initial Analysis by [email protected]
Aug. 31, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://gitlab.kitware.com/vtk/vtk/issues/17818 No Types Assigned https://gitlab.kitware.com/vtk/vtk/issues/17818 Exploit, Issue Tracking, Third Party Advisory Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:a:vtk:vtk:*:*:*:*:*:*:*:* versions up to (including) 9.0.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-42521 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-42521
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.03%
score
0.56222
percentile