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I. Basic Information for CVE-2021-25663
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes IPv6 headers does not check the lengths of extension header options, allowing attackers to put this function into an infinite loop with crafted length values.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens Nucleus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
siemens Nucleus是德国西门子（siemens）公司的一个工控设备。提供一个工控设备。 Siemens Nucleus存在安全漏洞，该漏洞源于程序处理IPv6头的函数不检查扩展头选项的长度，允许攻击者使用精心设计的长度值将该函数放入无限循环中。以下产品或版本受到影响：Nucleus 4、Nucleus NET、Nucleus ReadyStart、Nucleus Source Code、VSTAR。
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
VendorProductAffected VersionsCPESubscribe
SiemensCapital Embedded AR Classic 431-422 0 ~ * -
SiemensCapital Embedded AR Classic R20-11 0 ~ V2303 -
SiemensNucleus NET All versions -
SiemensNucleus ReadyStart V3 0 ~ V2017.02.4 -
SiemensNucleus ReadyStart V4 0 ~ V4.1.0 -
SiemensNucleus Source Code 0 ~ * -
II. Public POCs for CVE-2021-25663
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III. Intelligence Information for CVE-2021-25663
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IV. Related Vulnerabilities
Same product: Capital Embedded AR Classic 431-422
Same vendor: Siemens
Same weakness: CWE-835
V. Comments for CVE-2021-25663

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