Details of VAR-202111-1609

ID

VAR-202111-1609

CVE

CVE-2021-31882

TITLE

Siemens Nucleus Buffer error vulnerability

Trust: 0.6

sources: CNNVD: CNNVD-202111-850

DESCRIPTION

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), Desigo PXC00-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC00-U (All versions >= V2.3 and < V6.30.016), Desigo PXC001-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC100-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC12-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC128-U (All versions >= V2.3 and < V6.30.016), Desigo PXC200-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC36.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC50-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC64-U (All versions >= V2.3 and < V6.30.016), Desigo PXM20-E (All versions >= V2.3 and < V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). 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)

Trust: 1.0

sources: NVD: CVE-2021-31882

AFFECTED PRODUCTS

vendor:	siemens	model:	capital vstar	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	apogee pxc compact	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	nucleus source code	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	talon tc compact	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	nucleus readystart v3	scope:	lt	version:	2017.02.1	Trust: 1.0
vendor:	siemens	model:	apogee pxc modular	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	talon tc modular	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	nucleus net	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	apogee modular equiment controller	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	apogee modular building controller	scope:	eq	version:	*	Trust: 1.0

sources: NVD: CVE-2021-31882

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-31882
value:	HIGH
Trust: 1.0
CNNVD:	CNNVD-202111-850
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2021-31882
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.0

nvd@nist.gov:	CVE-2021-31882
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 1.0

sources: CNNVD: CNNVD-202111-850 // NVD: CVE-2021-31882

PROBLEMTYPE DATA

problemtype:

CWE-119

Trust: 1.0

sources: NVD: CVE-2021-31882

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202111-850

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202111-850

PATCH

title:

Siemens Nucleus ReadyStart Buffer error vulnerability fix

url:

http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=174358

Trust: 0.6

sources: CNNVD: CNNVD-202111-850

EXTERNAL IDS

db:	SIEMENS	id:	SSA-114589	Trust: 1.6
db:	SIEMENS	id:	SSA-620288	Trust: 1.6
db:	SIEMENS	id:	SSA-044112	Trust: 1.6
db:	NVD	id:	CVE-2021-31882	Trust: 1.6
db:	ICS CERT	id:	ICSA-21-350-06	Trust: 0.6
db:	ICS CERT	id:	ICSA-21-313-03	Trust: 0.6
db:	ICS CERT	id:	ICSA-21-315-07	Trust: 0.6
db:	AUSCERT	id:	ESB-2021.3874	Trust: 0.6
db:	AUSCERT	id:	ESB-2021.4289	Trust: 0.6
db:	AUSCERT	id:	ESB-2021.3833	Trust: 0.6
db:	CS-HELP	id:	SB2021111003	Trust: 0.6
db:	CS-HELP	id:	SB2021121648	Trust: 0.6
db:	CNNVD	id:	CNNVD-202111-850	Trust: 0.6

sources: CNNVD: CNNVD-202111-850 // NVD: CVE-2021-31882

REFERENCES

url:	https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf	Trust: 1.6
url:	https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf	Trust: 1.6
url:	https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf	Trust: 1.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021111003	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2021.3874	Trust: 0.6
url:	https://nvd.nist.gov/vuln/detail/cve-2021-31882	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2021.4289	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021121648	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2021.3833	Trust: 0.6
url:	https://us-cert.cisa.gov/ics/advisories/icsa-21-315-07	Trust: 0.6
url:	https://us-cert.cisa.gov/ics/advisories/icsa-21-350-06	Trust: 0.6
url:	https://us-cert.cisa.gov/ics/advisories/icsa-21-313-03	Trust: 0.6

sources: CNNVD: CNNVD-202111-850 // NVD: CVE-2021-31882

CREDITS

Siemens reported these vulnerabilities to CISA.

Trust: 0.6

sources: CNNVD: CNNVD-202111-850

SOURCES

db:	CNNVD	id:	CNNVD-202111-850
db:	NVD	id:	CVE-2021-31882

LAST UPDATE DATE

2024-08-14T13:11:19.455000+00:00

SOURCES UPDATE DATE

db:	CNNVD	id:	CNNVD-202111-850	date:	2022-05-23T00:00:00
db:	NVD	id:	CVE-2021-31882	date:	2022-05-20T13:15:12.420

SOURCES RELEASE DATE

db:	CNNVD	id:	CNNVD-202111-850	date:	2021-11-09T00:00:00
db:	NVD	id:	CVE-2021-31882	date:	2021-11-09T12:15:09.317