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CVE-2023-40706— Improper Restriction of Excessive Authentication Attempts in OPTO 22 SNAP PAC S1 Built-in Web Server

Quick assessment

Affected
OPTO 22 SNAP PAC S1
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.

OPTO 22 SNAP PAC S1是美国OPTO 22公司的一种控制器。 OPTO 22 SNAP PAC S1 Firmware R10.3b版本存在安全漏洞，该漏洞源于Web服务器中的登录尝试次数没有限制，导致攻击者可以对内置Web服务器登录进行暴力攻击。

CVSS 8.6 · High EPSS 0.67% · P52

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force
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I. Basic Information for CVE-2023-40706

Vulnerability Information
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Vulnerability Title
Improper Restriction of Excessive Authentication Attempts in OPTO 22 SNAP PAC S1 Built-in Web Server
Source: CVE Program / CVE List V5
Vulnerability Description
There is no limit on the number of login attempts in the web server for the SNAP PAC S1 Firmware version R10.3b. This could allow for a brute-force attack on the built-in web server login.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OPTO 22 SNAP PAC S1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OPTO 22 SNAP PAC S1是美国OPTO 22公司的一种控制器。 OPTO 22 SNAP PAC S1 Firmware R10.3b版本存在安全漏洞，该漏洞源于Web服务器中的登录尝试次数没有限制，导致攻击者可以对内置Web服务器登录进行暴力攻击。
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
OPTO 22 SNAP PAC S1 R10.3b -

II. Public POCs for CVE-2023-40706

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III. Intelligence Information for CVE-2023-40706

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Vendor Advisories for CVE-2023-40706 (1)

Same Patch Batch · OPTO 22 · 2023-08-24 · 5 CVEs total

CVE-2023-40707 8.6 HIGH Weak password requirements in OPTO 22 SNAP PAC S1 Built-in Web Server
CVE-2023-40710 6.8 MEDIUM OPTO 22 SNAP PAC S1 资源管理错误漏洞
CVE-2023-40709 6.8 MEDIUM Uncontrolled Resource Consumption in OPTO 22 SNAP PAC S1 Built-In Web Server
CVE-2023-40708 5.8 MEDIUM Improper Access Control in OPTO 22 SNAP PAC S1

IV. Related Vulnerabilities

Same product: SNAP PAC S1
Same vendor: OPTO 22
Same weakness: CWE-307