CVE-2021-25677

A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving.

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-705111.pdf	Patch Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf	Patch Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:siemens:simotics_connect_400_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simotics_connect_400:-:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:siemens:nucleus_net::::::::
	cpe:2.3:a:siemens:nucleus_readystart_v3::::::::
	cpe:2.3:a:siemens:nucleus_readystart_v4::::::::
	cpe:2.3:a:siemens:nucleus_source_code:-:::::::*

Information

Published : 2021-04-22 14:15

Updated : 2022-04-22 12:41

NVD link : CVE-2021-25677

Mitre link : CVE-2021-25677

JSON object : View

CWE

CWE-330

Use of Insufficiently Random Values

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Products Affected

siemens

nucleus_readystart_v3
simotics_connect_400_firmware
nucleus_source_code
simotics_connect_400
nucleus_readystart_v4
nucleus_net

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