CVE-2021-27393

A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : 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-201384.pdf	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

21 Nov 2024, 05:57

Type	Values Removed	Values Added
References	~~() https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf - Vendor Advisory~~	() https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf - Vendor Advisory

Information

Published : 2021-04-22 21:15

Updated : 2024-11-21 05:57

NVD link : CVE-2021-27393

Mitre link : CVE-2021-27393

CVE.ORG link : CVE-2021-27393

JSON object : View

Products Affected

siemens

nucleus_source_code
nucleus_readystart_v3
nucleus_net

CWE

CWE-330

Use of Insufficiently Random Values

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