CVE-2020-28388

medium

Description

A vulnerability has been identified in Capital VSTAR (All versions), Nucleus NET (All versions < V5.2), Nucleus ReadyStart V3 (All versions < V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions). 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://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf

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

Details

Source: MITRE

Published: 2021-02-09

Updated: 2021-11-30

Type: CWE-342

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM