CVE-2021-20041

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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
sonicwallCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 62%
VendorProductVersion
sonicwallsma_200_firmware
9.0.0.11-31sv
sonicwallsma_200_firmware
10.2.0.8-37sv
sonicwallsma_200_firmware
10.2.1.1-19sv
sonicwallsma_210_firmware
9.0.0.11-31sv
sonicwallsma_210_firmware
10.2.0.8-37sv
sonicwallsma_210_firmware
10.2.1.1-19sv
sonicwallsma_410_firmware
9.0.0.11-31sv
sonicwallsma_410_firmware
10.2.0.8-37sv
sonicwallsma_410_firmware
10.2.1.1-19sv
sonicwallsma_400_firmware
9.0.0.11-31sv
sonicwallsma_400_firmware
10.2.0.8-37sv
sonicwallsma_400_firmware
10.2.1.1-19sv
sonicwallsma_500v_firmware
9.0.0.11-31sv
sonicwallsma_500v_firmware
10.2.0.8-37sv
sonicwallsma_500v_firmware
10.2.1.1-19sv
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026