Details of VAR-202111-1608

ID

VAR-202111-1608

CVE

CVE-2021-31883

TITLE

Siemens Nucleus ReadyStart Buffer error vulnerability

Trust: 0.6

sources: CNNVD: CNNVD-202111-847

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). When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)

Trust: 1.0

sources: NVD: CVE-2021-31883

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-2021-31883

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-31883
value:	HIGH
Trust: 1.0
CNNVD:	CNNVD-202111-847
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2021-31883
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-2021-31883
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-202111-847 // NVD: CVE-2021-31883

PROBLEMTYPE DATA

problemtype:

CWE-119

Trust: 1.0

sources: NVD: CVE-2021-31883

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202111-847

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202111-847

PATCH

title:

Siemens Nucleus ReadyStart Buffer error vulnerability fix

url:

http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=174354

Trust: 0.6

sources: CNNVD: CNNVD-202111-847

EXTERNAL IDS

db:	NVD	id:	CVE-2021-31883	Trust: 1.6
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:	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-202111-847	Trust: 0.6

sources: CNNVD: CNNVD-202111-847 // NVD: CVE-2021-31883

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://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-202111-847 // NVD: CVE-2021-31883

CREDITS

Siemens reported these vulnerabilities to CISA.

Trust: 0.6

sources: CNNVD: CNNVD-202111-847

SOURCES

db:	CNNVD	id:	CNNVD-202111-847
db:	NVD	id:	CVE-2021-31883

LAST UPDATE DATE

2024-08-14T12:23:08.727000+00:00

SOURCES UPDATE DATE

db:	CNNVD	id:	CNNVD-202111-847	date:	2022-05-23T00:00:00
db:	NVD	id:	CVE-2021-31883	date:	2022-05-20T13:15:12.510

SOURCES RELEASE DATE

db:	CNNVD	id:	CNNVD-202111-847	date:	2021-11-09T00:00:00
db:	NVD	id:	CVE-2021-31883	date:	2021-11-09T12:15:09.383