cve-2020-27738
Vulnerability from cvelistv5
Published
2021-04-22 20:42
Modified
2024-08-04 16:18
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P/RL:O/RC:C
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 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 record decompression functionality does not properly validate the pointer offset values. The parsing of malformed responses could result in a read access 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.
References
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdfPatch, Vendor Advisory
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdfPatch, Vendor Advisory
Impacted products
SiemensAPOGEE PXC Compact (BACnet)
SiemensAPOGEE PXC Compact (P2 Ethernet)
SiemensAPOGEE PXC Modular (BACnet)
SiemensAPOGEE PXC Modular (P2 Ethernet)
SiemensNucleus NET
SiemensNucleus ReadyStart V3
SiemensNucleus ReadyStart V4
SiemensNucleus Source Code
SiemensSIMOTICS CONNECT 400
SiemensTALON TC Compact (BACnet)
SiemensTALON TC Modular (BACnet)
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  }
}


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