CVE-2021-20041
High
Description
An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Sonicwall Sma 200 Firmware
PublishedDec 8, 2021
First seenDec 8, 2021
Weakness typeCWE-835CWE-835
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sonicwall sma_200_firmware | 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv | — |
| sonicwall sma_210_firmware | 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv | — |
| sonicwall sma_410_firmware | 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv | — |
| sonicwall sma_400_firmware | 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv | — |
| sonicwall sma_500v_firmware | 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv | — |
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