Details of VAR-202102-0562

ID

VAR-202102-0562

CVE

CVE-2021-1291

TITLE

plural Cisco Small Business RV Assumed to be immutable in the router Web Parameter external control vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-003097

DESCRIPTION

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as the root user on an affected device. These vulnerabilities exist because HTTP requests are not properly validated. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device. plural Cisco Small Business RV The router is assumed to be immutable Web There is a vulnerability related to external control of parameters.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Authentication is not required to exploit this vulnerability.The specific flaw exists within the web service, which listens on TCP port 443 by default. When parsing the Content-Type request header, the process does not properly validate a user-supplied string before using it to execute a system call

Trust: 2.34

sources: NVD: CVE-2021-1291 // JVNDB: JVNDB-2021-003097 // ZDI: ZDI-21-132 // VULMON: CVE-2021-1291

AFFECTED PRODUCTS

vendor:	cisco	model:	rv260 vpn router	scope:	lt	version:	1.0.01.02	Trust: 1.0
vendor:	cisco	model:	rv260w wireless-ac vpn router	scope:	lt	version:	1.0.01.02	Trust: 1.0
vendor:	cisco	model:	rv260p vpn router with poe	scope:	lt	version:	1.0.01.02	Trust: 1.0
vendor:	cisco	model:	rv160 vpn router	scope:	lt	version:	1.0.01.02	Trust: 1.0
vendor:	cisco	model:	rv160w wireless-ac vpn router	scope:	lt	version:	1.0.01.02	Trust: 1.0
vendor:	シスコシステムズ	model:	rv260w wireless-ac vpn router	scope:	-	version:	-	Trust: 0.8
vendor:	シスコシステムズ	model:	rv160w wireless-ac vpn router	scope:	-	version:	-	Trust: 0.8
vendor:	シスコシステムズ	model:	rv160 vpn router	scope:	-	version:	-	Trust: 0.8
vendor:	シスコシステムズ	model:	rv260p vpn router with poe	scope:	-	version:	-	Trust: 0.8
vendor:	シスコシステムズ	model:	rv260 vpn router	scope:	-	version:	-	Trust: 0.8
vendor:	cisco	model:	multiple routers	scope:	-	version:	-	Trust: 0.7

sources: ZDI: ZDI-21-132 // JVNDB: JVNDB-2021-003097 // NVD: CVE-2021-1291

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD:	CVE-2021-1291
value:	CRITICAL
Trust: 1.8
ZDI:	CVE-2021-1291
value:	HIGH
Trust: 0.7
CNNVD:	CNNVD-202102-350
value:	CRITICAL
Trust: 0.6

NVD:	CVE-2021-1291
severity:	HIGH
baseScore:	10.0
vectorString:	AV:N/AC:L/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8

NVD:	CVE-2021-1291
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2021-1291
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8
ZDI:	CVE-2021-1291
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.0
Trust: 0.7

sources: ZDI: ZDI-21-132 // JVNDB: JVNDB-2021-003097 // CNNVD: CNNVD-202102-350 // NVD: CVE-2021-1291

PROBLEMTYPE DATA

problemtype:	CWE-472	Trust: 1.0
problemtype:	Assumed to be immutable Web External control of parameters (CWE-472) [ Other ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-003097 // NVD: CVE-2021-1291

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202102-350

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202102-350

CONFIGURATIONS

sources: NVD: CVE-2021-1291

PATCH

title:	Cisco has issued an update to correct this vulnerability.	url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-rv160-260-rce-xzefknhf	Trust: 1.5
title:	Multiple Cisco Product security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=140572	Trust: 0.6
title:	Cisco: Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution Vulnerabilities	url:	https://vulmon.com/vendoradvisory?qidtp=cisco_security_advisories_and_alerts_ciscoproducts&qid=cisco-sa-rv160-260-rce-xzefknhf	Trust: 0.1
title:	Threatpost	url:	https://threatpost.com/cisco-flaws-vpn-routers-rce/163662/	Trust: 0.1

sources: ZDI: ZDI-21-132 // VULMON: CVE-2021-1291 // JVNDB: JVNDB-2021-003097 // CNNVD: CNNVD-202102-350

EXTERNAL IDS

db:	NVD	id:	CVE-2021-1291	Trust: 3.2
db:	JVNDB	id:	JVNDB-2021-003097	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-11688	Trust: 0.7
db:	ZDI	id:	ZDI-21-132	Trust: 0.7
db:	CNNVD	id:	CNNVD-202102-350	Trust: 0.6
db:	VULMON	id:	CVE-2021-1291	Trust: 0.1

sources: ZDI: ZDI-21-132 // VULMON: CVE-2021-1291 // JVNDB: JVNDB-2021-003097 // CNNVD: CNNVD-202102-350 // NVD: CVE-2021-1291

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-rv160-260-rce-xzefknhf	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2021-1291	Trust: 1.4
url:	https://cwe.mitre.org/data/definitions/472.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://exchange.xforce.ibmcloud.com/vulnerabilities/196084	Trust: 0.1
url:	https://threatpost.com/cisco-flaws-vpn-routers-rce/163662/	Trust: 0.1

sources: ZDI: ZDI-21-132 // VULMON: CVE-2021-1291 // JVNDB: JVNDB-2021-003097 // CNNVD: CNNVD-202102-350 // NVD: CVE-2021-1291

CREDITS

T Shiomitsu

Trust: 0.7

sources: ZDI: ZDI-21-132

SOURCES

db:	ZDI	id:	ZDI-21-132
db:	VULMON	id:	CVE-2021-1291
db:	JVNDB	id:	JVNDB-2021-003097
db:	CNNVD	id:	CNNVD-202102-350
db:	NVD	id:	CVE-2021-1291

LAST UPDATE DATE

2022-05-04T09:59:36.573000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-21-132	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1291	date:	2021-02-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-003097	date:	2021-10-18T08:03:00
db:	CNNVD	id:	CNNVD-202102-350	date:	2021-02-09T00:00:00
db:	NVD	id:	CVE-2021-1291	date:	2021-02-08T16:16:00

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-21-132	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1291	date:	2021-02-04T00:00:00
db:	JVNDB	id:	JVNDB-2021-003097	date:	2021-10-18T00:00:00
db:	CNNVD	id:	CNNVD-202102-350	date:	2021-02-03T00:00:00
db:	NVD	id:	CVE-2021-1291	date:	2021-02-04T17:15:00