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CVE-2023-50707— Uncontrolled Resource Consumption in EFACEC BCU 500

Quick assessment

Affected
EFACEC BCU 500
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.

EFACEC BCU 500是葡萄牙EFACEC公司的一个可编程控制系统。 EFACEC BCU 500 存在资源管理错误漏洞，该漏洞源于通过利用活动用户会话，攻击者可以发送自定义请求以在设备上造成拒绝服务。

CVSS 9.6 · Critical EPSS 0.70% · P52

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process
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I. Basic Information for CVE-2023-50707

Vulnerability Information
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Vulnerability Title
Uncontrolled Resource Consumption in EFACEC BCU 500
Source: CVE Program / CVE List V5
Vulnerability Description
Through the exploitation of active user sessions, an attacker could send custom requests to cause a denial-of-service condition on the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
EFACEC BCU 500 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EFACEC BCU 500是葡萄牙EFACEC公司的一个可编程控制系统。 EFACEC BCU 500 存在资源管理错误漏洞，该漏洞源于通过利用活动用户会话，攻击者可以发送自定义请求以在设备上造成拒绝服务。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
EFACEC BCU 500 version 4.07 -

II. Public POCs for CVE-2023-50707

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III. Intelligence Information for CVE-2023-50707

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Vendor Advisories for CVE-2023-50707 (1)

Same Patch Batch · EFACEC · 2023-12-19 · 6 CVEs total

CVE-2023-6689 8.2 HIGH Cross-Site Request Forgery in EFACEC BCU 500
CVE-2023-50703 6.3 MEDIUM Cleartext Transmission of Sensitive Information in EFACEC UC 500E
CVE-2023-50705 5.3 MEDIUM Exposure of Sensitive Information to an Unauthorized Actor in EFACEC UC 500E
CVE-2023-50704 4.3 MEDIUM URL Redirection to Untrusted Site ('Open Redirect') in EFACEC UC 500E
CVE-2023-50706 4.1 MEDIUM Improper Access Control in EFACEC UC 500E

IV. Related Vulnerabilities

Same product: BCU 500
Same vendor: EFACEC
Same weakness: CWE-400

V. Comments for CVE-2023-50707

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