CVE-2021-20034: Path Traversal
First published: Mon Sep 27 2021(Updated: )
An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.
Credit: PSIRT@sonicwall.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SonicWall SMA 200 firmware | <=9.0.0.10-28sv | |
| SonicWall SMA 200 firmware | >=10.2.0.0<=10.2.0.7-34sv | |
| SonicWall SMA 200 firmware | >=10.2.1.0<=10.2.1.0-17sv | |
| SonicWall SMA 200 firmware | ||
| SonicWall SMA 210 | <=9.0.0.10-28sv | |
| SonicWall SMA 210 | >=10.2.0.0<=10.2.0.7-34sv | |
| SonicWall SMA 210 | >=10.2.1.0<=10.2.1.0-17sv | |
| SonicWall SMA 210 Firmware | ||
| SonicWall SMA 400 firmware | <=9.0.0.10-28sv | |
| SonicWall SMA 400 firmware | >=10.2.0.0<=10.2.0.7-34sv | |
| SonicWall SMA 400 firmware | >=10.2.1.0<=10.2.1.0-17sv | |
| SonicWall SMA 400 firmware | ||
| SonicWall SMA 410 | <=9.0.0.10-28sv | |
| SonicWall SMA 410 | >=10.2.0.0<=10.2.0.7-34sv | |
| SonicWall SMA 410 | >=10.2.1.0<=10.2.1.0-17sv | |
| SonicWall SMA 410 | ||
| SonicWall SMA 500v Firmware | <=9.0.0.10-28sv | |
| SonicWall SMA 500v Firmware | >=10.2.0.0<=10.2.0.7-34sv | |
| SonicWall SMA 500v Firmware | >=10.2.1.0<=10.2.1.0-17sv |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-20034?
The severity of CVE-2021-20034 is critical with a CVSS score of 9.1.
How does CVE-2021-20034 affect Sonicwall SMA?
CVE-2021-20034 affects Sonicwall SMA 200, 210, 400, 410, and 500v firmware versions.
How can an attacker exploit CVE-2021-20034?
An attacker can exploit CVE-2021-20034 by bypassing the path traversal checks and deleting an arbitrary file on an affected device.
What is the impact of CVE-2021-20034?
The impact of CVE-2021-20034 is the potential for an attacker to reboot the affected device to factory default settings.
Is there a fix available for CVE-2021-20034?
Yes, Sonicwall has released firmware updates to address the vulnerability in SMA 200, 210, 400, 410, and 500v.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/last-modified-date
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/weakness
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/sonicwall
- canonical/sonicwall sma 200 firmware
- version/sonicwall sma 200 firmware/9.0.0.10-28sv
- version/sonicwall sma 200 firmware/10.2.0.0
- version/sonicwall sma 200 firmware/10.2.0.7-34sv
- version/sonicwall sma 200 firmware/10.2.1.0
- version/sonicwall sma 200 firmware/10.2.1.0-17sv
- canonical/sonicwall sma 210
- version/sonicwall sma 210/9.0.0.10-28sv
- version/sonicwall sma 210/10.2.0.0
- version/sonicwall sma 210/10.2.0.7-34sv
- version/sonicwall sma 210/10.2.1.0
- version/sonicwall sma 210/10.2.1.0-17sv
- canonical/sonicwall sma 210 firmware
- canonical/sonicwall sma 400 firmware
- version/sonicwall sma 400 firmware/9.0.0.10-28sv
- version/sonicwall sma 400 firmware/10.2.0.0
- version/sonicwall sma 400 firmware/10.2.0.7-34sv
- version/sonicwall sma 400 firmware/10.2.1.0
- version/sonicwall sma 400 firmware/10.2.1.0-17sv
- canonical/sonicwall sma 410
- version/sonicwall sma 410/9.0.0.10-28sv
- version/sonicwall sma 410/10.2.0.0
- version/sonicwall sma 410/10.2.0.7-34sv
- version/sonicwall sma 410/10.2.1.0
- version/sonicwall sma 410/10.2.1.0-17sv
- canonical/sonicwall sma 500v firmware
- version/sonicwall sma 500v firmware/9.0.0.10-28sv
- version/sonicwall sma 500v firmware/10.2.0.0
- version/sonicwall sma 500v firmware/10.2.0.7-34sv
- version/sonicwall sma 500v firmware/10.2.1.0
- version/sonicwall sma 500v firmware/10.2.1.0-17sv