Vulnerability DatabaseCVE-2021-42521
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CVE-2021-42521
August 25, 2022
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.
Affected Packages
vtk (PYTHON):
Affected version(s) >=0.1.0 <9.0.1
Fix Suggestion:
Update to version 9.0.1
Related Resources (8)
https://github.com/advisories/GHSA-xfhg-9pjg-xg7g
https://gitlab.kitware.com/vtk/vtk/issues/17818
https://gitlab.kitware.com/vtk/vtk
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK
https://nvd.nist.gov/vuln/detail/CVE-2021-42521
https://github.com/pypa/advisory-database/tree/main/vulns/vtk/PYSEC-2022-255.yaml
https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400
NULL Pointer Dereference
CWE-476
EPSS
Base Score:
0.14