Details of VAR-202102-0564

ID

VAR-202102-0564

CVE

CVE-2021-1293

TITLE

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

Trust: 0.8

sources: JVNDB: JVNDB-2021-003099

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. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer

Trust: 2.34

sources: NVD: CVE-2021-1293 // JVNDB: JVNDB-2021-003099 // ZDI: ZDI-21-136 // VULMON: CVE-2021-1293

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-21-136 // JVNDB: JVNDB-2021-003099 // NVD: CVE-2021-1293

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD:	CVE-2021-1293
value:	CRITICAL
Trust: 1.8
ZDI:	CVE-2021-1293
value:	HIGH
Trust: 0.7
CNNVD:	CNNVD-202102-346
value:	CRITICAL
Trust: 0.6

NVD:	CVE-2021-1293
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-2021-1293
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-2021-1293
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-2021-1293
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-21-136 // JVNDB: JVNDB-2021-003099 // CNNVD: CNNVD-202102-346 // NVD: CVE-2021-1293

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-2021-003099 // NVD: CVE-2021-1293

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202102-346

TYPE

authorization issue

Trust: 0.6

sources: CNNVD: CNNVD-202102-346

CONFIGURATIONS

sources: NVD: CVE-2021-1293

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 Authorization Issue Vulnerability Fixing Measures	url:	http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=140568	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-21-136 // VULMON: CVE-2021-1293 // JVNDB: JVNDB-2021-003099 // CNNVD: CNNVD-202102-346

EXTERNAL IDS

db:	NVD	id:	CVE-2021-1293	Trust: 3.2
db:	JVNDB	id:	JVNDB-2021-003099	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-11726	Trust: 0.7
db:	ZDI	id:	ZDI-21-136	Trust: 0.7
db:	CNNVD	id:	CNNVD-202102-346	Trust: 0.6
db:	VULMON	id:	CVE-2021-1293	Trust: 0.1

sources: ZDI: ZDI-21-136 // VULMON: CVE-2021-1293 // JVNDB: JVNDB-2021-003099 // CNNVD: CNNVD-202102-346 // NVD: CVE-2021-1293

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-2021-1293	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/196082	Trust: 0.1
url:	https://threatpost.com/cisco-flaws-vpn-routers-rce/163662/	Trust: 0.1

sources: ZDI: ZDI-21-136 // VULMON: CVE-2021-1293 // JVNDB: JVNDB-2021-003099 // CNNVD: CNNVD-202102-346 // NVD: CVE-2021-1293

CREDITS

T Shiomitsu

Trust: 0.7

sources: ZDI: ZDI-21-136

SOURCES

db:	ZDI	id:	ZDI-21-136
db:	VULMON	id:	CVE-2021-1293
db:	JVNDB	id:	JVNDB-2021-003099
db:	CNNVD	id:	CNNVD-202102-346
db:	NVD	id:	CVE-2021-1293

LAST UPDATE DATE

2022-05-04T09:59:36.543000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-21-136	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1293	date:	2021-02-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-003099	date:	2021-10-18T08:03:00
db:	CNNVD	id:	CNNVD-202102-346	date:	2021-02-09T00:00:00
db:	NVD	id:	CVE-2021-1293	date:	2021-02-08T16:16:00

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-21-136	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1293	date:	2021-02-04T00:00:00
db:	JVNDB	id:	JVNDB-2021-003099	date:	2021-10-18T00:00:00
db:	CNNVD	id:	CNNVD-202102-346	date:	2021-02-03T00:00:00
db:	NVD	id:	CVE-2021-1293	date:	2021-02-04T17:15:00