CVE Vulnerability

CVE-2020-28388

A vulnerability has been identified in APOGEE PXC Series (BACnet) (All versions < V3.5.5), APOGEE PXC Series (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 Series (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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf
Configurations

Configuration 1

cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:pluscontrol_1st_gen:*:*:*:*:*:*:*:*
Information

Published : 2021-02-09 06:15

Updated : 2022-12-13 04:15

NVD link : CVE-2020-28388

Mitre link : CVE-2020-28388

Products Affected
No products.
CWE
CWE-342

Predictable Exact Value from Previous Values