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I. Basic Information for CVE-2020-27738
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name record decompression functionality does not properly validate the pointer offset values. The parsing of malformed responses could result in a read access past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to cause a denial-of-service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在缓冲区结束位置之后访问内存
Source: NVD (National Vulnerability Database)
Vulnerability Title
多款siemens产品 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens TALON Series是德国西门子（Siemens）公司的一个开放系统。使控制器和应用程序在单个平台上运行，同时彼此互操作。 多款siemens产品存在缓冲区错误漏洞，攻击者可利用该漏洞导致拒绝服务。
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)
Affected Products
VendorProductAffected VersionsCPESubscribe
SiemensAPOGEE PXC Compact (BACnet) All versions < V3.5.5 -
SiemensAPOGEE PXC Compact (P2 Ethernet) All versions < V2.8.20 -
SiemensAPOGEE PXC Modular (BACnet) All versions < V3.5.5 -
SiemensAPOGEE PXC Modular (P2 Ethernet) All versions < V2.8.20 -
SiemensNucleus NET All versions -
SiemensNucleus ReadyStart V3 All versions < V2017.02.3 -
SiemensNucleus ReadyStart V4 All versions < V4.1.0 -
SiemensNucleus Source Code Versions including affected DNS modules -
SiemensSIMOTICS CONNECT 400 All versions < V0.5.0.0 -
SiemensTALON TC Compact (BACnet) All versions < V3.5.5 -
SiemensTALON TC Modular (BACnet) All versions < V3.5.5 -
II. Public POCs for CVE-2020-27738
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III. Intelligence Information for CVE-2020-27738
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New Vulnerabilities
Product: APOGEE PXC Compact (BACnet)
Vendor: Siemens
Same weakness: CWE-788
V. Comments for CVE-2020-27738

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