CVE-2021-27391
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…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Siemens | Apogee Mbc \(Ppc\) \(P2 Ethernet\) Firmware | through 2.6.3 |
| Siemens | Apogee Mec \(Ppc\) \(P2 Ethernet\) Firmware | through 2.6.3 |
| Siemens | Apogee Pxc Bacnet Automation Controller Firmware | before 3.5.3 |
| Siemens | Apogee Pxc Compact \(P2 Ethernet\) Firmware | through 2.8 |
| Siemens | Apogee Pxc Modular \(Bacnet\) Firmware | before 3.5.3 |
| Siemens | Apogee Pxc Modular \(P2 Ethernet\) Firmware | through 2.8 |
| Siemens | Talon Tc Compact \(Bacnet\) Firmware | before 3.5.3 |
| Siemens | Talon Tc Modular \(Bacnet\) Firmware | before 3.5.3 |