What is CVE-2021-20022?

CVE-2021-20022 is a vulnerability in SonicWall Email Security that allows a post-authenticated attacker to upload a file to the remote host.

How severe is CVE-2021-20022?

CVE-2021-20022 has a severity rating of 7.2 (high).

What is the affected software for CVE-2021-20022?

The affected software for CVE-2021-20022 is SonicWall Email Security version up to 10.0.9.6103.

Is there a fix available for CVE-2021-20022?

Yes, SonicWall has released a fix for CVE-2021-20022. It is recommended to update to the latest version of SonicWall Email Security.

Vulnerability/
CVE-2021-20022

Exploited

high

7.2

CWE

434

9/4/2021

14/4/2021

CVE-2021-20022: SonicWall Email Security Unrestricted Upload of File Vulnerability

Q: How can the SonicWall Email Security unrestricted upload of file vulnerability be exploited?

The SonicWall Email Security unrestricted upload of file vulnerability can be exploited by a post-authenticated attacker to upload malicious files.

First published: Fri Apr 09 2021(Updated: )

SonicWall Email Security contains an unrestricted upload of file with dangerous type vulnerability that allows a post-authenticated attacker to upload a file to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20023 to achieve privilege escalation.

Credit: PSIRT@sonicwall.com

Affected Software	Affected Version	How to fix
SonicWall Email Security	<10.0.9.6103
Sonicwall Hosted Email Security	<10.0.9.6103

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Reference Links

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0008

Frequently Asked Questions

What is CVE-2021-20022?
CVE-2021-20022 is a vulnerability in SonicWall Email Security that allows a post-authenticated attacker to upload a file to the remote host.
How severe is CVE-2021-20022?
CVE-2021-20022 has a severity rating of 7.2 (high).
What is the affected software for CVE-2021-20022?
The affected software for CVE-2021-20022 is SonicWall Email Security version up to 10.0.9.6103.
How can the SonicWall Email Security unrestricted upload of file vulnerability be exploited?
The SonicWall Email Security unrestricted upload of file vulnerability can be exploited by a post-authenticated attacker to upload malicious files.
Is there a fix available for CVE-2021-20022?
Yes, SonicWall has released a fix for CVE-2021-20022. It is recommended to update to the latest version of SonicWall Email Security.

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