NVD

CVE-2021-31882 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Current Description

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)

View Analysis Description

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Siemens AG

Base Score: 6.5 MEDIUM

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.0 MEDIUM

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

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://cert-portal.siemens.com/productcert/html/ssa-044112.html
https://cert-portal.siemens.com/productcert/html/ssa-114589.html
https://cert-portal.siemens.com/productcert/html/ssa-620288.html
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	Siemens AG

Known Affected Software Configurations Switch to CPE 2.2

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Change History

8 change records found show changes

CVE Modified by Siemens AG 10/08/2024 5:15:05 AM

Action	Type	Old Value	New Value
Changed	Description	Record truncated, showing 500 of 1659 characters. View Entire Change Record A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.19), APOGEE PXC Modular (BACnet) (All versions < V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.19), Capital VSTAR (All versions with enabled Ethernet options),	A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)
Added	CVSS V3.1		Siemens AG AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	Reference		Siemens AG https://cert-portal.siemens.com/productcert/html/ssa-044112.html [No types assigned]
Added	Reference		Siemens AG https://cert-portal.siemens.com/productcert/html/ssa-114589.html [No types assigned]
Added	Reference		Siemens AG https://cert-portal.siemens.com/productcert/html/ssa-620288.html [No types assigned]

Initial Analysis by NIST 11/12/2021 11:56:35 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:apogee_modular_building_controller_firmware::::::::* OR cpe:2.3:h:siemens:apogee_modular_building_controller:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:apogee_modular_equiment_controller_firmware::::::::* OR cpe:2.3:h:siemens:apogee_modular_equiment_controller:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:apogee_pxc_compact_firmware::::::::* OR cpe:2.3:h:siemens:apogee_pxc_compact:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:apogee_pxc_modular_firmware::::::::* OR cpe:2.3:h:siemens:apogee_pxc_modular:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:talon_tc_compact_firmware::::::::* OR cpe:2.3:h:siemens:talon_tc_compact:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:siemens:talon_tc_modular_firmware::::::::* OR cpe:2.3:h:siemens:talon_tc_modular:-:::::::*
Added	CPE Configuration		OR cpe:2.3:a:siemens:capital_vstar::::::::* cpe:2.3:a:siemens:nucleus_net::::::::* cpe:2.3:a:siemens:nucleus_readystart_v3::::::::* versions up to (excluding) 2017.02.1 cpe:2.3:a:siemens:nucleus_readystart_v4::::::::* versions up to (excluding) 4.1.1 cpe:2.3:a:siemens:nucleus_source_code::::::::*
Changed	Reference Type	https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf No Types Assigned	https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf Vendor Advisory
Changed	Reference Type	https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf No Types Assigned	https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-31882
NVD Published Date:
11/09/2021
NVD Last Modified:
11/21/2024
Source:
Siemens AG

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2021-31882 Detail

Current Description

Analysis Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

CVE Modified by CVE 11/21/2024 1:06:25 AM

CVE Modified by Siemens AG 10/08/2024 5:15:05 AM

CVE Modified by Siemens AG 5/14/2024 5:02:22 AM

CVE Modified by Siemens AG 5/20/2022 9:15:12 AM

CVE Modified by Siemens AG 4/12/2022 5:15:11 AM

CVE Modified by Siemens AG 12/14/2021 7:15:08 AM

Reanalysis by NIST 11/12/2021 1:15:20 PM

Initial Analysis by NIST 11/12/2021 11:56:35 AM

Quick Info