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I. Basic Information for CVE-2021-27391
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens APOGEE MBC 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens APOGEE MBC是德国西门子（Siemens）公司的一个模块化楼宇控制器。 Siemens APOGEE MBC 存在缓冲区错误漏洞，该漏洞源于产品在解析请求时缺乏适当的边界检查。攻击者可通过该漏洞在执行具备root权限的命令。以下产品及版本受到影响: Siemens APOGEE MBC (PPC) (P2以太网) V2.6.3 版本、APOGEE MEC (PPC) (P2以太网) V2.6.3版本、 APOGEE PXC Compact (BACnet) V3.5.3 之前版本，
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 MBC (PPC) (P2 Ethernet) All versions >= V2.6.3 -
SiemensAPOGEE MEC (PPC) (P2 Ethernet) All versions >= V2.6.3 -
SiemensAPOGEE PXC Compact (BACnet) All versions < V3.5.3 -
SiemensAPOGEE PXC Compact (P2 Ethernet) All versions >= V2.8 -
SiemensAPOGEE PXC Modular (BACnet) All versions < V3.5.3 -
SiemensAPOGEE PXC Modular (P2 Ethernet) All versions >= V2.8 -
SiemensTALON TC Compact (BACnet) All versions < V3.5.3 -
SiemensTALON TC Modular (BACnet) All versions < V3.5.3 -
II. Public POCs for CVE-2021-27391
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III. Intelligence Information for CVE-2021-27391
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IV. Related Vulnerabilities
Same vendor: Siemens
Same weakness: CWE-120
V. Comments for CVE-2021-27391

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