Details of VAR-202112-0296

ID

VAR-202112-0296

CVE

CVE-2021-22956

TITLE

Citrix ADC Resource exhaustion vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-016059

DESCRIPTION

An uncontrolled resource consumption vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 that could allow an attacker with access to NSIP or SNIP with management interface access to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication. Citrix ADC Exists in a resource exhaustion vulnerability.Service operation interruption (DoS) It may be in a state

Trust: 1.71

sources: NVD: CVE-2021-22956 // JVNDB: JVNDB-2021-016059 // VULHUB: VHN-381430

AFFECTED PRODUCTS

vendor:	citrix	model:	gateway	scope:	gte	version:	12.1	Trust: 1.0
vendor:	citrix	model:	sd-wan	scope:	lt	version:	10.2.9c	Trust: 1.0
vendor:	citrix	model:	application delivery controller	scope:	lt	version:	13.0-83.27	Trust: 1.0
vendor:	citrix	model:	sd-wan	scope:	gte	version:	11.4.0	Trust: 1.0
vendor:	citrix	model:	gateway	scope:	lt	version:	12.1-63.22	Trust: 1.0
vendor:	citrix	model:	gateway	scope:	lt	version:	11.1-65.23	Trust: 1.0
vendor:	citrix	model:	application delivery controller	scope:	lt	version:	12.1-63.22	Trust: 1.0
vendor:	citrix	model:	gateway	scope:	gte	version:	13.0	Trust: 1.0
vendor:	citrix	model:	application delivery controller	scope:	lt	version:	11.1-65.23	Trust: 1.0
vendor:	citrix	model:	application delivery controller	scope:	gte	version:	12.1	Trust: 1.0
vendor:	citrix	model:	application delivery controller	scope:	gte	version:	13.0	Trust: 1.0
vendor:	citrix	model:	sd-wan	scope:	lt	version:	11.4.2	Trust: 1.0
vendor:	citrix	model:	gateway	scope:	lt	version:	13.0-65.23	Trust: 1.0
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	citrix sd-wan	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	citrix application delivery controller firmware 12.1-63.22	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	citrix gateway plugin	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	-	version:	-	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	citrix application delivery controller firmware 11.1-65.23	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	-	Trust: 0.8
vendor:	シトリックスシステムズ	model:	citrix application delivery controller	scope:	eq	version:	citrix application delivery controller firmware 13.0-83.27	Trust: 0.8

sources: JVNDB: JVNDB-2021-016059 // NVD: CVE-2021-22956

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-22956
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-22956
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202111-971
value:	HIGH
Trust: 0.6
VULHUB:	VHN-381430
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2021-22956
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-381430
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2021-22956
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
NVD:	CVE-2021-22956
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/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:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-381430 // JVNDB: JVNDB-2021-016059 // CNNVD: CNNVD-202111-971 // NVD: CVE-2021-22956

PROBLEMTYPE DATA

problemtype:	CWE-400	Trust: 1.1
problemtype:	Resource exhaustion (CWE-400) [NVD evaluation ]	Trust: 0.8

sources: VULHUB: VHN-381430 // JVNDB: JVNDB-2021-016059 // NVD: CVE-2021-22956

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202111-971

TYPE

resource management error

Trust: 0.6

sources: CNNVD: CNNVD-202111-971

PATCH

title:

CTX330728

url:

https://support.citrix.com/article/CTX330728/citrix-application-delivery-controller-citrix-gateway-and-citrix-sdwan-wanop-edition-appliance-security-update

Trust: 0.8

sources: JVNDB: JVNDB-2021-016059

EXTERNAL IDS

db:	NVD	id:	CVE-2021-22956	Trust: 3.3
db:	JVNDB	id:	JVNDB-2021-016059	Trust: 0.8
db:	AUSCERT	id:	ESB-2021.3830	Trust: 0.6
db:	CNNVD	id:	CNNVD-202111-971	Trust: 0.6
db:	VULHUB	id:	VHN-381430	Trust: 0.1

sources: VULHUB: VHN-381430 // JVNDB: JVNDB-2021-016059 // CNNVD: CNNVD-202111-971 // NVD: CVE-2021-22956

REFERENCES

url:	https://support.citrix.com/article/ctx330728	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2021-22956	Trust: 1.4
url:	https://www.auscert.org.au/bulletins/esb-2021.3830	Trust: 0.6

sources: VULHUB: VHN-381430 // JVNDB: JVNDB-2021-016059 // CNNVD: CNNVD-202111-971 // NVD: CVE-2021-22956

SOURCES

db:	VULHUB	id:	VHN-381430
db:	JVNDB	id:	JVNDB-2021-016059
db:	CNNVD	id:	CNNVD-202111-971
db:	NVD	id:	CVE-2021-22956

LAST UPDATE DATE

2024-08-14T14:37:48.723000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-381430	date:	2021-12-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-016059	date:	2022-12-05T08:12:00
db:	CNNVD	id:	CNNVD-202111-971	date:	2021-12-16T00:00:00
db:	NVD	id:	CVE-2021-22956	date:	2021-12-08T19:01:17.300

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-381430	date:	2021-12-07T00:00:00
db:	JVNDB	id:	JVNDB-2021-016059	date:	2022-12-05T00:00:00
db:	CNNVD	id:	CNNVD-202111-971	date:	2021-11-10T00:00:00
db:	NVD	id:	CVE-2021-22956	date:	2021-12-07T14:15:08.943