Paper/Archive/CVE-2021-31886

CVE-2021-31886

Siemens APOGEE MBC (PPC) (BACnet) — A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE ME…

Description · from the CVE record

A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.19), APOGEE PXC Modular (BACnet) (All versions < V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.19), Desigo PXC00-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC00-U (All versions >= V2.3 and < V6.30.016), Desigo PXC001-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC100-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC12-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC128-U (All versions >= V2.3 and < V6.30.016), Desigo PXC200-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC36.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC50-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC64-U (All versions >= V2.3 and < V6.30.016), Desigo PXM20-E (All versions >= V2.3 and < V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). FTP server does not properly validate the length of the “USER” command, leading to stack-based buffer overflows. This may result in Denial-of-Service conditions and Remote Code Execution. (FSMD-2021-0010)

Affected

ProductAffectedFixed inSource
APOGEE MBC (PPC) (BACnet)All versions–CNA
APOGEE MBC (PPC) (P2 Ethernet)All versions–CNA
APOGEE MEC (PPC) (BACnet)All versions–CNA
APOGEE MEC (PPC) (P2 Ethernet)All versions–CNA
APOGEE PXC Compact (BACnet)All versions < V3.5.4–CNA
APOGEE PXC Compact (P2 Ethernet)All versions < V2.8.19–CNA
APOGEE PXC Modular (BACnet)All versions < V3.5.4–CNA
APOGEE PXC Modular (P2 Ethernet)All versions < V2.8.19–CNA
Desigo PXC00-E.DAll versions >= V2.3 and < V6.30.016–CNA
Desigo PXC00-UAll versions >= V2.3 and < V6.30.016–CNA
Desigo PXC001-E.DAll versions >= V2.3 and < V6.30.016–CNA
Desigo PXC100-E.DAll versions >= V2.3 and < V6.30.016–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refcert-portal.siemens.com/productcert/pdf/ssa-114589.pdfrefcert-portal.siemens.com/productcert/pdf/ssa-044112.pdf