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CVE-2021-32970— Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation

Quick assessment

Affected
Moxa NPort IAW5000A-I/O series firmware
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.

MOXA Moxa NPort IA5150A Series是中国摩莎（MOXA）公司的一个工控设备服务器。用于1端口RS-232 / 422/485工业自动化设备服务器，带串行/LAN/电源浪涌保护，2个10/100BaseT（X）端口，带单个IP，工作温度为0至60°C。 Moxa NPort IAW5000A-I/O Series Wireless Device Server存在输入验证错误漏洞，该漏洞源于数据可以在不经过验证的情况下复制到内置的web服务器中，远程攻击者可利用该漏洞造成拒绝服务。

CVSS 7.5 · High EPSS 1.69% · P76

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-32970

Vulnerability Information
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Vulnerability Title
Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation
Source: CVE Program / CVE List V5
Vulnerability Description
Data can be copied without validation in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier, which may allow a remote attacker to cause denial-of-service conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
NPort IA5000A-I/O Series 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MOXA Moxa NPort IA5150A Series是中国摩莎（MOXA）公司的一个工控设备服务器。用于1端口RS-232 / 422/485工业自动化设备服务器，带串行/LAN/电源浪涌保护，2个10/100BaseT（X）端口，带单个IP，工作温度为0至60°C。 Moxa NPort IAW5000A-I/O Series Wireless Device Server存在输入验证错误漏洞，该漏洞源于数据可以在不经过验证的情况下复制到内置的web服务器中，远程攻击者可利用该漏洞造成拒绝服务。
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
Moxa NPort IAW5000A-I/O series firmware unspecified ~ 2.2 -

II. Public POCs for CVE-2021-32970

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III. Intelligence Information for CVE-2021-32970

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Vendor Advisories for CVE-2021-32970 (1)

Other References for CVE-2021-32970 (1)

Same Patch Batch · Moxa · 2022-04-01 · 4 CVEs total

CVE-2021-32974 9.8 CRITICAL Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation
CVE-2021-32976 9.8 CRITICAL Moxa NPort IAW5000A-I/O Series Serial Device Server Stack-based Buffer Overflow
CVE-2021-32968 7.5 HIGH Moxa NPort IAW5000A-I/O Series Serial Device Server Classic Buffer Overflow

IV. Related Vulnerabilities

Same product: NPort IAW5000A-I/O series firmware
Same vendor: Moxa
Same weakness: CWE-20

V. Comments for CVE-2021-32970

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