Affected: Siemens APOGEE PXC Compact (BACnet), Siemens APOGEE PXC Compact (P2 Ethernet), Siemens APOGEE PXC Modular (BACnet), Siemens APOGEE PXC Modular (P2 Ethernet), Siemens Nucleus NET, Siemens Nucleus ReadyStart V3, Siemens Nucleus ReadyStart V4, Siemens Nucleus Source Code, Siemens SIMOTICS CONNECT 400, Siemens TALON TC Compact (BACnet) and 1 more

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 label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read 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 or leak the read memory.