CVE-2021-25663

A vulnerability has been identified in Capital VSTAR (Versions including affected IPv6 stack), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected IPv6 stack). The function that processes IPv6 headers does not check the lengths of extension header options, allowing attackers to put this function into an infinite loop with crafted length values.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf	Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-05	Third Party Advisory US Government Resource

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:siemens:capital_vstar:-:::::::*
	cpe:2.3:a:siemens:nucleus_net::::::::
	cpe:2.3:a:siemens:nucleus_readystart::::::::
	cpe:2.3:a:siemens:nucleus_source_code:-:::::::*

Configuration 2 (hide)

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

Information

Published : 2021-04-22 21:15

Updated : 2021-12-10 19:55

NVD link : CVE-2021-25663

Mitre link : CVE-2021-25663

JSON object : View

Products Affected

siemens

nucleus_readystart
nucleus_source_code
nucleus_net
capital_vstar

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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