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.

CVSS v3.0 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3.0 : MEDIUM

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

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

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

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Configurations

Configuration 1 (hide)

OR	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::::::::

Configuration 2 (hide)

AND

cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:powerpc_project:powerpc:-:::::::*
	cpe:2.3:h:arm:arm:-:::::::*
	cpe:2.3:h:mips:mips:-:::::::*

Information

Published : 2021-02-09 10:15

Updated : 2022-12-13 08:15

NVD link : CVE-2020-28388

Mitre link : CVE-2020-28388

JSON object : View

CWE

CWE-342

Predictable Exact Value from Previous Values

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Products Affected

siemens

nucleus_net
nucleus_source_code
nucleus_readystart
pluscontrol_1st_gen
capital_vstar

arm

arm

powerpc_project

powerpc

mips

mips

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