CVE-2020-28388

medium

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 ReadyStart V3 (All versions < V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.

References

https://www.tenable.com/blog/numberjack-nine-vulnerabilities-across-multiple-open-source-tcpip-stacks

https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf

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

Details

Source: Mitre, NVD

Published: 2021-02-09

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium