CVE Vulnerabilities

CVE-2021-20041

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Dec 08, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu
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An unauthenticated and remote adversary can consume all of the devices 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.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

NameVendorStart VersionEnd Version
Sma_200_firmwareSonicwall9.0.0.11-31sv (including)9.0.0.11-31sv (including)
Sma_200_firmwareSonicwall10.2.0.8-37sv (including)10.2.0.8-37sv (including)
Sma_200_firmwareSonicwall10.2.1.1-19sv (including)10.2.1.1-19sv (including)

References