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CVE-2023-27336— Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

Quick assessment

Affected
Softing edgeConnector Siemens
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.

Softing edgeConnector是Softing公司的一款基于 Docker 的软件应用。可访问 SIMATIC S7、SINUMERIK 840D 和 Modbus TCP 控制器中的过程数据。 Softing edgeAggregator 存在安全漏洞，该漏洞源于OPC 客户端证书的处理中存在取消引用空指针，攻击者利用该漏洞可以在系统上创建拒绝服务条件。

AI Predicted 7.5 Difficulty: Easy EPSS 0.81% · P54
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I. Basic Information for CVE-2023-27336

Vulnerability Information
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Vulnerability Title
Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC client certificates. The issue results from dereferencing a NULL pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20508.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Softing edgeConnector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Softing edgeConnector是Softing公司的一款基于 Docker 的软件应用。可访问 SIMATIC S7、SINUMERIK 840D 和 Modbus TCP 控制器中的过程数据。 Softing edgeAggregator 存在安全漏洞，该漏洞源于OPC 客户端证书的处理中存在取消引用空指针，攻击者利用该漏洞可以在系统上创建拒绝服务条件。
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
Softing edgeConnector Siemens 3.40 -

II. Public POCs for CVE-2023-27336

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III. Intelligence Information for CVE-2023-27336

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Vendor Advisories for CVE-2023-27336 (1)

Same Patch Batch · Softing · 2024-05-03 · 9 CVEs total

CVE-2023-39480 Softing Secure Integration Server FileDirectory OPC UA Object Arbitrary File Creation Vuln
CVE-2023-39481 Softing Secure Integration Server Interpretation Conflict Remote Code Execution Vulnerabil
CVE-2023-39482 Softing Secure Integration Server Hardcoded Cryptographic Key Information Disclosure Vulne
CVE-2023-39479 Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability
CVE-2023-39478 Softing Secure Integration Server Exposure of Resource to Wrong Sphere Remote Code Executi
CVE-2023-38125 Softing edgeAggregator Permissive Cross-domain Policy with Untrusted Domains Remote Code E
CVE-2023-27334 Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulne
CVE-2023-27335 Softing edgeAggregator Client Cross-Site Scripting Remote Code Execution Vulnerability

IV. Related Vulnerabilities

Same product: edgeConnector Siemens
Same vendor: Softing
Same weakness: CWE-476

V. Comments for CVE-2023-27336

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