CVE-2021-31884 Information

Description

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) Capital VSTAR (All versions with enabled Ethernet options) 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). The DHCP client application assumes that the data supplied with the “Hostname” DHCP option is NULL terminated. In cases when global hostname variable is not defined this may lead to Out-of-bound reads writes and Denial-of-service conditions. (FSMD-2021-0014)

CVSS Vector

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

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8