CVE-2020-15795: siemens apogee pxc compact (bacnet) Out-of-bounds Write

Vulnerability summary

CVE-2020-15795 is a high (CVSS 8.1) Out-of-bounds Write vulnerability in siemens apogee pxc compact (bacnet). EPSS estimates a 6.37% chance of exploitation in the next 30 days, higher than 93.5% of scored vulnerabilities.

Timeline

1. 22-04-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.