What software versions are affected by CVE-2021-20019?

SonicWall SonicOS versions 7.0.0.376 to 7.0.0 and 7.0.1-r1036, SonicWall SonicOS 6.0.5.3-94o, SonicWall SonicOS 6.5.1.12-3n, SonicWall SonicOS 6.5.4.7-83n, and Sonicwall Sonicosv 6.5.4.4-44v-21-955 are affected by CVE-2021-20019.

What is the severity of CVE-2021-20019?

CVE-2021-20019 has a severity rating of 7.5 (high).

How can this vulnerability be exploited?

This vulnerability can be exploited by sending a crafted HTTP request to the SonicOS HTTP server.

Is there a fix available for CVE-2021-20019?

Yes, SonicWall has released a fix for CVE-2021-20019. It is recommended to update to the latest version of SonicOS.

Vulnerability/
CVE-2021-20019

high

7.5

CWE

119 200

23/6/2021

3/8/2024

CVE-2021-20019: Buffer Overflow

Q: What is CVE-2021-20019?

CVE-2021-20019 is a vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, potentially leading to an internal sensitive data disclosure vulnerability.

First published: Wed Jun 23 2021(Updated: )

A vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, this can potentially lead to an internal sensitive data disclosure vulnerability.

Credit: PSIRT@sonicwall.com

Affected Software	Affected Version	How to fix
SonicWall SonicOS	>=7.0.0<7.0.0.376
SonicWall SonicOS	>=7.0.1<7.0.1-r1036
SonicWall SonicOS	=6.0.5.3-94o
SonicWall SonicOS	=6.5.1.12-3n
SonicWall SonicOS	=6.5.4.7-83n
Sonicwall Sonicosv	=6.5.4.4-44v-21-955

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Reference Links

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0006

Frequently Asked Questions

What is CVE-2021-20019?
CVE-2021-20019 is a vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, potentially leading to an internal sensitive data disclosure vulnerability.
What software versions are affected by CVE-2021-20019?
SonicWall SonicOS versions 7.0.0.376 to 7.0.0 and 7.0.1-r1036, SonicWall SonicOS 6.0.5.3-94o, SonicWall SonicOS 6.5.1.12-3n, SonicWall SonicOS 6.5.4.7-83n, and Sonicwall Sonicosv 6.5.4.4-44v-21-955 are affected by CVE-2021-20019.
What is the severity of CVE-2021-20019?
CVE-2021-20019 has a severity rating of 7.5 (high).
How can this vulnerability be exploited?
This vulnerability can be exploited by sending a crafted HTTP request to the SonicOS HTTP server.
Is there a fix available for CVE-2021-20019?
Yes, SonicWall has released a fix for CVE-2021-20019. It is recommended to update to the latest version of SonicOS.

collector/nvd-index
agent/weakness
agent/references
agent/author
agent/severity
agent/type
agent/event
agent/description
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/sonicwall
canonical/sonicwall sonicos
version/sonicwall sonicos/7.0.0
version/sonicwall sonicos/7.0.1
version/sonicwall sonicos/6.0.5.3-94o
version/sonicwall sonicos/6.5.1.12-3n
version/sonicwall sonicos/6.5.4.7-83n
canonical/sonicwall sonicosv
version/sonicwall sonicosv/6.5.4.4-44v-21-955

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