CVE-2021-27393
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I. Basic Information for CVE-2021-27393
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不充分的随机数
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nucleus ReadyStart安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens Nucleus ReadyStart是德国Siemens公司的一个捆绑式解决方案。用于加速完整系统的快速启动并提供丰富的板级支持包 (Bsp) Siemens Nucleus 存在安全特征问题漏洞，攻击者可利用该漏洞污染DNS缓存或欺骗DNS解析。
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 |
|---|---|---|---|---|
| Siemens | Nucleus NET | All versions | - | |
| Siemens | Nucleus ReadyStart V3 | All versions < V2013.08 | - | |
| Siemens | Nucleus Source Code | Versions including affected DNS modules | - |
II. Public POCs for CVE-2021-27393
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Siemens · 2021-04-22 · 19 CVEs total
| CVE-2020-25244 | 8.4 HIGH | Siemens LOGO! Soft Comfort 代码问题漏洞 |
| CVE-2020-27009 | 8.1 HIGH | 多款Siemens产品 缓冲区错误漏洞 |
| CVE-2020-15795 | 8.1 HIGH | 多款siemens产品 缓冲区错误漏洞 |
| CVE-2021-25663 | 7.5 HIGH | Siemens Nucleus 安全漏洞 |
| CVE-2021-25664 | 7.5 HIGH | Siemens Nucleus 安全漏洞 |
| CVE-2020-27737 | 6.5 MEDIUM | 多款siemens产品 缓冲区错误漏洞 |
| CVE-2020-27736 | 6.5 MEDIUM | 多款siemens产品 缓冲区错误漏洞 |
| CVE-2020-27738 | 6.5 MEDIUM | 多款siemens产品 缓冲区错误漏洞 |
| CVE-2021-25677 | 5.3 MEDIUM | 多款Siemens产品 安全特征问题漏洞 |
| CVE-2020-25243 | 5.1 MEDIUM | Siemens LOGO! Soft Comfort 路径遍历漏洞 |
| CVE-2021-25668 | Siemens Web Server缓冲区错误漏洞 | |
| CVE-2021-25669 | Siemens Web Server 缓冲区错误漏洞 | |
| CVE-2021-27392 | Siemens Open Network Bridge 信任管理问题漏洞 | |
| CVE-2021-27389 | Siemens Digital Industries Software Opcenter Quality 安全漏洞 | |
| CVE-2020-26997 | Siemens Solid Edge 安全漏洞 | |
| CVE-2021-27382 | Siemens Solid Edge 缓冲区错误漏洞 | |
| CVE-2021-25678 | Siemens Solid Edge 缓冲区错误漏洞 | |
| CVE-2021-25670 | siemens Tecnomatix RobotExpert 缓冲区错误漏洞 |
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FreeScout has Predictable Attachment Token that Allows Unaut - CVE-2026-40306
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Chamilo LMS has Weak REST API Key Generation (Predictable)
V. Comments for CVE-2021-27393
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