Details of VAR-202102-0568

ID

VAR-202102-0568

CVE

CVE-2021-1297

TITLE

plural Cisco Small Business RV Absolute Path Traversal Vulnerability in Routers

Trust: 0.8

sources: JVNDB: JVNDB-2021-003101

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 conduct directory traversal attacks and overwrite certain files that should be restricted on an affected system. These vulnerabilities are due to insufficient input validation. An attacker could exploit these vulnerabilities by using the web-based management interface to upload a file to location on an affected device that they should not have access to. A successful exploit could allow the attacker to overwrite files on the file system of the affected device. plural Cisco Small Business RV A router contains a vulnerability related to absolute path traversal.Information may be tampered with. This vulnerability allows network-adjacent attackers to create arbitrary files on affected installations of Cisco RV16x and RV26x routers. 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 filename parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create files in the context of root

Trust: 2.34

sources: NVD: CVE-2021-1297 // JVNDB: JVNDB-2021-003101 // ZDI: ZDI-21-135 // VULMON: CVE-2021-1297

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-21-135 // JVNDB: JVNDB-2021-003101 // NVD: CVE-2021-1297

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD:	CVE-2021-1297
value:	HIGH
Trust: 1.8
ZDI:	CVE-2021-1297
value:	HIGH
Trust: 0.7
CNNVD:	CNNVD-202102-330
value:	HIGH
Trust: 0.6

NVD:	CVE-2021-1297
severity:	HIGH
baseScore:	9.4
vectorString:	AV:N/AC:L/AU:N/C:N/I:C/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
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-2021-1297
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2021-1297
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8
ZDI:	CVE-2021-1297
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-21-135 // JVNDB: JVNDB-2021-003101 // CNNVD: CNNVD-202102-330 // NVD: CVE-2021-1297

PROBLEMTYPE DATA

problemtype:	CWE-36	Trust: 1.0
problemtype:	Absolute past traversal (CWE-36) [ Other ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-003101 // NVD: CVE-2021-1297

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202102-330

TYPE

authorization issue

Trust: 0.6

sources: CNNVD: CNNVD-202102-330

CONFIGURATIONS

sources: NVD: CVE-2021-1297

PATCH

title:	Cisco has issued an update to correct this vulnerability.	url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-rv160-260-filewrite-7x9mnkjn	Trust: 1.5
title:	Multiple Cisco Product Authorization Issue Vulnerability Fixing Measures	url:	http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=140552	Trust: 0.6
title:	Cisco: Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File Write Vulnerabilities	url:	https://vulmon.com/vendoradvisory?qidtp=cisco_security_advisories_and_alerts_ciscoproducts&qid=cisco-sa-rv160-260-filewrite-7x9mnkjn	Trust: 0.1
title:	Threatpost	url:	https://threatpost.com/cisco-flaws-vpn-routers-rce/163662/	Trust: 0.1
title:	-	url:	https://www.theregister.co.uk/2021/02/05/cisco_critical_rv_vpn_router_bugs/	Trust: 0.1

sources: ZDI: ZDI-21-135 // VULMON: CVE-2021-1297 // JVNDB: JVNDB-2021-003101 // CNNVD: CNNVD-202102-330

EXTERNAL IDS

db:	NVD	id:	CVE-2021-1297	Trust: 3.2
db:	JVNDB	id:	JVNDB-2021-003101	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-11716	Trust: 0.7
db:	ZDI	id:	ZDI-21-135	Trust: 0.7
db:	CNNVD	id:	CNNVD-202102-330	Trust: 0.6
db:	VULMON	id:	CVE-2021-1297	Trust: 0.1

sources: ZDI: ZDI-21-135 // VULMON: CVE-2021-1297 // JVNDB: JVNDB-2021-003101 // CNNVD: CNNVD-202102-330 // NVD: CVE-2021-1297

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-rv160-260-filewrite-7x9mnkjn	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2021-1297	Trust: 1.4
url:	https://cwe.mitre.org/data/definitions/36.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://exchange.xforce.ibmcloud.com/vulnerabilities/196124	Trust: 0.1
url:	https://threatpost.com/cisco-flaws-vpn-routers-rce/163662/	Trust: 0.1

sources: ZDI: ZDI-21-135 // VULMON: CVE-2021-1297 // JVNDB: JVNDB-2021-003101 // CNNVD: CNNVD-202102-330 // NVD: CVE-2021-1297

CREDITS

T Shiomitsu

Trust: 0.7

sources: ZDI: ZDI-21-135

SOURCES

db:	ZDI	id:	ZDI-21-135
db:	VULMON	id:	CVE-2021-1297
db:	JVNDB	id:	JVNDB-2021-003101
db:	CNNVD	id:	CNNVD-202102-330
db:	NVD	id:	CVE-2021-1297

LAST UPDATE DATE

2022-05-04T09:55:20.075000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-21-135	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1297	date:	2021-02-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-003101	date:	2021-10-18T08:03:00
db:	CNNVD	id:	CNNVD-202102-330	date:	2021-02-09T00:00:00
db:	NVD	id:	CVE-2021-1297	date:	2021-02-08T16:14:00

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-21-135	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2021-1297	date:	2021-02-04T00:00:00
db:	JVNDB	id:	JVNDB-2021-003101	date:	2021-10-18T00:00:00
db:	CNNVD	id:	CNNVD-202102-330	date:	2021-02-03T00:00:00
db:	NVD	id:	CVE-2021-1297	date:	2021-02-04T17:15:00