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[email protected]CVE-2021-20042

HistoryDec 08, 2021 - 10:15 a.m.

CVE-2021-20042

2021-12-0810:15:00

NVD-CWE-Other

[email protected]

web.nvd.nist.gov

cve-2021-20042

sma 100

firewall bypass

nvd

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

73.9%

JSON

An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

CPENameOperatorVersion
sonicwall:sma_200_firmwaresonicwall sma 200 firmwareeq9.0.0.11-31sv
sonicwall:sma_200_firmwaresonicwall sma 200 firmwareeq10.2.0.8-37sv
sonicwall:sma_200_firmwaresonicwall sma 200 firmwareeq10.2.1.1-19sv
sonicwall:sma_210_firmwaresonicwall sma 210 firmwareeq9.0.0.11-31sv
sonicwall:sma_210_firmwaresonicwall sma 210 firmwareeq10.2.0.8-37sv
sonicwall:sma_210_firmwaresonicwall sma 210 firmwareeq10.2.1.1-19sv
sonicwall:sma_410_firmwaresonicwall sma 410 firmwareeq9.0.0.11-31sv
sonicwall:sma_410_firmwaresonicwall sma 410 firmwareeq10.2.0.8-37sv
sonicwall:sma_410_firmwaresonicwall sma 410 firmwareeq10.2.1.1-19sv
sonicwall:sma_400_firmwaresonicwall sma 400 firmwareeq9.0.0.11-31sv

CPE	Name	Operator	Version
sonicwall:sma_200_firmware	sonicwall sma 200 firmware	eq	9.0.0.11-31sv
sonicwall:sma_200_firmware	sonicwall sma 200 firmware	eq	10.2.0.8-37sv
sonicwall:sma_200_firmware	sonicwall sma 200 firmware	eq	10.2.1.1-19sv
sonicwall:sma_210_firmware	sonicwall sma 210 firmware	eq	9.0.0.11-31sv
sonicwall:sma_210_firmware	sonicwall sma 210 firmware	eq	10.2.0.8-37sv
sonicwall:sma_210_firmware	sonicwall sma 210 firmware	eq	10.2.1.1-19sv
sonicwall:sma_410_firmware	sonicwall sma 410 firmware	eq	9.0.0.11-31sv
sonicwall:sma_410_firmware	sonicwall sma 410 firmware	eq	10.2.0.8-37sv
sonicwall:sma_410_firmware	sonicwall sma 410 firmware	eq	10.2.1.1-19sv
sonicwall:sma_400_firmware	sonicwall sma 400 firmware	eq	9.0.0.11-31sv

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References

psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

73.9%

JSON

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