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CVE-2021-20042

Quick assessment

Affected
SonicWall SonicWall SMA100
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sonicwall SMA100是美国Sonicwall公司的一款安全访问网关设备。 SonicWall SMA100 存在安全漏洞，未经身份验证的远程攻击者可以使用 SMA100 作为意外代理或中间无法检测的代理来绕过防火墙规则。此漏洞影响了 SMA 200、210、400、410 和 500v 设备。

AI Predicted 8.1 Difficulty: Moderate EPSS 3.68% · P89

Possible ATT&CK Techniques 1 AI

T1090.003 · Multi-hop Proxy
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I. Basic Information for CVE-2021-20042

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
SonicWall SMA100 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sonicwall SMA100是美国Sonicwall公司的一款安全访问网关设备。 SonicWall SMA100 存在安全漏洞，未经身份验证的远程攻击者可以使用 SMA100 作为意外代理或中间无法检测的代理来绕过防火墙规则。此漏洞影响了 SMA 200、210、400、410 和 500v 设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SonicWall SonicWall SMA100 9.0.0.11-31sv and earlier -

II. Public POCs for CVE-2021-20042

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III. Intelligence Information for CVE-2021-20042

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Other References for CVE-2021-20042 (1)

Same Patch Batch · SonicWall · 2021-12-08 · 9 CVEs total

CVE-2021-20047 SonicWall Global VPN client 代码问题漏洞
CVE-2021-20045 SonicWall SMA100 安全漏洞
CVE-2021-20044 Sonicwall SMA100 操作系统命令注入漏洞
CVE-2021-20043 Sonicwall SMA100 缓冲区错误漏洞
CVE-2021-20041 SonicWall SMA100安全漏洞
CVE-2021-20040 Sonicwall SMA100 路径遍历漏洞
CVE-2021-20039 Sonicwall SMA100 操作系统操作系统命令注入漏洞
CVE-2021-20038 Sonicwall SMA100 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: SonicWall SMA100
Same vendor: SonicWall
Same weakness: CWE-441

V. Comments for CVE-2021-20042

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