CVE-2021-25677

Summary

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 V3 (All versions < V2017.02.4), 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), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving.

Affected Software

VendorProductVersion RangeStatus
SiemensAPOGEE PXC Compact (BACnet)All versions < V3.5.5affected
SiemensAPOGEE PXC Compact (P2 Ethernet)All versions < V2.8.20affected
SiemensAPOGEE PXC Modular (BACnet)All versions < V3.5.5affected
SiemensAPOGEE PXC Modular (P2 Ethernet)All versions < V2.8.20affected
SiemensNucleus NETAll versionsaffected
SiemensNucleus ReadyStart V3All versions < V2017.02.3affected
SiemensNucleus ReadyStart V3All versions < V2017.02.4affected
SiemensNucleus ReadyStart V4All versions < V4.1.0affected
SiemensNucleus Source CodeVersions including affected DNS modulesaffected
SiemensSIMOTICS CONNECT 400All versions < V0.5.0.0affected
SiemensSIMOTICS CONNECT 400All versions >= V0.5.0.0 < V1.0.0.0affected
SiemensTALON TC Compact (BACnet)All versions < V3.5.5affected
SiemensTALON TC Modular (BACnet)All versions < V3.5.5affected

Weaknesses

  • CWE-330: CWE-330: Use of Insufficiently Random Values

ADP Enrichment

CVE Program Container

Additional References

References