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CVE-2020-15795

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CVE-2020-15795

Published: Apr 22, 2021

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

8.1

HIGH

Description

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.

VendorProductVersions

Siemens

APOGEE PXC Compact (BACnet)

affected
All versions < V3.5.5

Siemens

APOGEE PXC Compact (P2 Ethernet)

affected
All versions < V2.8.20

Siemens

APOGEE PXC Modular (BACnet)

affected
All versions < V3.5.5

Siemens

APOGEE PXC Modular (P2 Ethernet)

affected
All versions < V2.8.20

Siemens

Nucleus NET

affected
All versions < V5.2

Siemens

Nucleus Source Code

affected
Versions including affected DNS modules

Siemens

TALON TC Compact (BACnet)

affected
All versions < V3.5.5

Siemens

TALON TC Modular (BACnet)

affected
All versions < V3.5.5

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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