CVE-2021-20042
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
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.
Overview
- CVE ID
- CVE-2021-20042
- Assigner
- PSIRT@sonicwall.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-08T10:15:08
- Last Modified Date
- 2021-12-10T21:57:24
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:sonicwall:sma_200_firmware:9.0.0.11-31sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:sonicwall:sma_210_firmware:9.0.0.11-31sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:sonicwall:sma_410_firmware:9.0.0.11-31sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:sonicwall:sma_400_firmware:9.0.0.11-31sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:sonicwall:sma_500v_firmware:9.0.0.11-31sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20042 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20042 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:41:36 | Added to TrackCVE | |||
| 2022-12-06 03:16:35 | 2021-12-08T10:15Z | 2021-12-08T10:15:08 | CVE Published Date | updated |
| 2022-12-06 03:16:35 | 2021-12-10T21:57:24 | CVE Modified Date | updated | |
| 2022-12-06 03:16:35 | Analyzed | Vulnerability Status | updated |