CVE-2021-32980— Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel
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I. Basic Information for CVE-2021-32980
Vulnerability Information
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Vulnerability Title
Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel
Source: NVD (National Vulnerability Database)
Vulnerability Description
Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 does not protect against additional software programming connections. An attacker can connect to the PLC while an existing connection is already active.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: NVD (National Vulnerability Database)
Vulnerability Title
CLICK PLC CPU Modules 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CLICK PLC CPU Modules是Automation Direct的网络设备一个 CLICK CPU 模块最多可以连接 8 个 I/O 模块，以扩展系统 I/O 数量并满足特定应用的需要。 Automation Direct CLICK PLC CPU Modules 中存在授权问题漏洞，该漏洞源于固件不能防止额外的软件编程连接。攻击者可利用该漏洞可以在现有连接处于活动状态时连接到PLC。
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 |
|---|---|---|---|---|
| Automation Direct | CLICK PLC CPU Modules: C0-1x CPUs | unspecified ~ 3.00 | - |
II. Public POCs for CVE-2021-32980
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-32980
Same Patch Batch · Automation Direct · 2022-04-04 · 5 CVEs total
| CVE-2021-32984 | 9.8 CRITICAL | Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or C |
| CVE-2021-32986 | 9.8 CRITICAL | Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or C |
| CVE-2021-32978 | 7.5 HIGH | Automation Direct CLICK PLC CPU Modules Plaintext Storage of a Password |
| CVE-2021-32982 | 7.5 HIGH | Automation Direct CLICK PLC CPU Modules Cleartext Transmission of Sensitive Information |
IV. Related Vulnerabilities
Same product: CLICK PLC CPU Modules: C0-1x CPUs
Same vendor: Automation Direct
Same weakness: CWE-288
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V. Comments for CVE-2021-32980
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