What is the severity of CVE-2021-42990?

CVE-2021-42990 is classified as a high-severity vulnerability due to potential kernel-level code execution and system crash.

How do I fix CVE-2021-42990?

To fix CVE-2021-42990, upgrade FlexiHub For Windows to version 5.3.14268 or later.

Which versions of FlexiHub are affected by CVE-2021-42990?

FlexiHub For Windows versions between 2.0.4340 and 5.3.14268 are affected by CVE-2021-42990.

Is any version of Microsoft Windows affected by CVE-2021-42990?

No, Microsoft Windows itself is not vulnerable; the vulnerability lies within specific versions of FlexiHub.

Vulnerability/
CVE-2021-42990

high

8.8

CWE

120 119

7/12/2021

21/11/2024

CVE-2021-42990: Buffer Overflow

Q: What type of attack can CVE-2021-42990 enable?

CVE-2021-42990 can enable local attackers to execute arbitrary code in kernel mode or cause a denial of service.

First published: Tue Dec 07 2021(Updated: )

FlexiHub For Windows is affected by Buffer Overflow. IOCTL Handler 0x22001B in the FlexiHub For Windows above 2.0.4340 below 5.3.14268 allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
RealFlex RealWin	>2.0.4340<5.3.14268
Microsoft Windows
All of
RealFlex RealWin	>2.0.4340<5.3.14268
Microsoft Windows

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Reference Links

https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/

Frequently Asked Questions

What is the severity of CVE-2021-42990?
CVE-2021-42990 is classified as a high-severity vulnerability due to potential kernel-level code execution and system crash.
How do I fix CVE-2021-42990?
To fix CVE-2021-42990, upgrade FlexiHub For Windows to version 5.3.14268 or later.
What type of attack can CVE-2021-42990 enable?
CVE-2021-42990 can enable local attackers to execute arbitrary code in kernel mode or cause a denial of service.
Which versions of FlexiHub are affected by CVE-2021-42990?
FlexiHub For Windows versions between 2.0.4340 and 5.3.14268 are affected by CVE-2021-42990.
Is any version of Microsoft Windows affected by CVE-2021-42990?
No, Microsoft Windows itself is not vulnerable; the vulnerability lies within specific versions of FlexiHub.

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collector/mitre-cve
source/MITRE
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agent/references
agent/first-publish-date
agent/description
agent/last-modified-date
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agent/event
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
collector/nvd-api
source/NVD
agent/software-canonical-lookup
vendor/flexihub
canonical/realflex realwin
vendor/microsoft
canonical/microsoft windows

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