CVE-2021-42521

Public Exploit

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.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory fedoraproject.org
Affected: n/a vtk
Published at:
Updated at:

References

Link Tags
https://gitlab.kitware.com/vtk/vtk/issues/17818 third party advisory issue tracking exploit
https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-42521?
CVE-2021-42521 has been scored as a high severity vulnerability.
How to fix CVE-2021-42521?
To fix CVE-2021-42521, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42521 being actively exploited in the wild?
It is possible that CVE-2021-42521 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-42521?
CVE-2021-42521 affects n/a vtk.
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