CVE-2021-20040: Path Traversal
First published: Wed Dec 08 2021(Updated: )
A relative path traversal vulnerability in the SMA100 upload funtion allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobody' user. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Credit: PSIRT@sonicwall.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SonicWall SMA 200 firmware | =10.2.0.8-37sv | |
| SonicWall SMA 200 firmware | =10.2.1.1-19sv | |
| SonicWall SMA 200 firmware | ||
| SonicWall SMA 210 | =10.2.0.8-37sv | |
| SonicWall SMA 210 | =10.2.1.1-19sv | |
| SonicWall SMA 210 Firmware | ||
| SonicWall SMA 410 | =10.2.0.8-37sv | |
| SonicWall SMA 410 | =10.2.1.1-19sv | |
| SonicWall SMA 410 | ||
| SonicWall SMA 400 firmware | =10.2.0.8-37sv | |
| SonicWall SMA 400 firmware | =10.2.1.1-19sv | |
| SonicWall SMA 400 firmware | ||
| SonicWall SMA 500v Firmware | =10.2.0.8-37sv | |
| SonicWall SMA 500v Firmware | =10.2.1.1-19sv | |
| SonicWall SMA 500v Firmware |
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Frequently Asked Questions
What is the vulnerability ID of this security issue?
The vulnerability ID is CVE-2021-20040.
What is the affected software?
The affected software includes Sonicwall SMA 200 firmware version 10.2.0.8-37sv, Sonicwall SMA 210 firmware version 10.2.0.8-37sv, Sonicwall SMA 400 firmware version 10.2.0.8-37sv, Sonicwall SMA 410 firmware version 10.2.0.8-37sv, and Sonicwall SMA 500v firmware version 10.2.0.8-37sv.
What is the severity of CVE-2021-20040?
The severity of CVE-2021-20040 is high, with a CVSS score of 7.5.
How does the vulnerability in the SMA100 upload function work?
The vulnerability allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobody' user, exploiting a relative path traversal vulnerability.
How can I mitigate CVE-2021-20040?
To mitigate this vulnerability, apply the necessary patches or firmware updates provided by Sonicwall. Ensure that your SMA appliances have the latest firmware versions installed.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- 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/10.2.0.8-37sv
- version/sonicwall sma 200 firmware/10.2.1.1-19sv
- canonical/sonicwall sma 210
- version/sonicwall sma 210/10.2.0.8-37sv
- version/sonicwall sma 210/10.2.1.1-19sv
- canonical/sonicwall sma 210 firmware
- canonical/sonicwall sma 410
- version/sonicwall sma 410/10.2.0.8-37sv
- version/sonicwall sma 410/10.2.1.1-19sv
- canonical/sonicwall sma 400 firmware
- version/sonicwall sma 400 firmware/10.2.0.8-37sv
- version/sonicwall sma 400 firmware/10.2.1.1-19sv
- canonical/sonicwall sma 500v firmware
- version/sonicwall sma 500v firmware/10.2.0.8-37sv
- version/sonicwall sma 500v firmware/10.2.1.1-19sv