CVE-2020-15795

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 < V5.2), Nucleus Source Code (Versions including affected DNS modules), 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 names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.

Score

CVSS 3.1 8.1 High

Status

Modified - productcert@siemens.com

Published

2021-04-22

Last modified

2024-08-04

Weaknesses

CWE-787

Affected products

• 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 Source Code (Siemens)
• Talon Tc Compact Bacnet (Siemens)
• Talon Tc Modular Bacnet (Siemens)

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf