CVE-2021-1309

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

CVSS v3 8.8 HIGH
CVSS v2.0 8.3 HIGH

8.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.3^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:A/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 6.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:cisco:rv132w_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv132w_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv132w_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv132w:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

OR	cpe:2.3:o:cisco:rv134w_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv134w_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv134w_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv134w:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

OR	cpe:2.3:o:cisco:rv160_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv160_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv160_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv160:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

OR	cpe:2.3:o:cisco:rv160w_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv160w_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv160w_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv160w:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

OR	cpe:2.3:o:cisco:rv260_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv260_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv260_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv260:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND

OR	cpe:2.3:o:cisco:rv260p_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv260p_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv260p_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv260p:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND

OR	cpe:2.3:o:cisco:rv260w_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv260w_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv260w_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv260w:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND

OR	cpe:2.3:o:cisco:rv340_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv340_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv340_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND

OR	cpe:2.3:o:cisco:rv340w_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv340w_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv340w_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND

OR	cpe:2.3:o:cisco:rv345_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv345_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv345_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND

OR	cpe:2.3:o:cisco:rv345p_firmware:1.0.0.14:::::::*
	cpe:2.3:o:cisco:rv345p_firmware:1.0.1.14:::::::*
	cpe:2.3:o:cisco:rv345p_firmware:1.0.1.20:::::::*

cpe:2.3:h:cisco:rv345p:-:*:*:*:*:*:*:*

History

05 Aug 2022, 17:37

Type	Values Removed	Values Added
CWE	~~CWE-119~~	CWE-401

14 Apr 2021, 17:28

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 8.3 v3 : 8.8
References	~~(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe -~~	(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe - Vendor Advisory
CPE		cpe:2.3:o:cisco:rv340w_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv260_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv260p_firmware:1.0.0.14:::::::* cpe:2.3:h:cisco:rv340:-:::::::* cpe:2.3:o:cisco:rv160_firmware:1.0.1.20:::::::* cpe:2.3:h:cisco:rv260:-:::::::* cpe:2.3:o:cisco:rv260p_firmware:1.0.1.14:::::::* cpe:2.3:h:cisco:rv340w:-:::::::* cpe:2.3:o:cisco:rv345_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv134w_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv260w_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv340w_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv340w_firmware:1.0.1.14:::::::* cpe:2.3:h:cisco:rv160:-:::::::* cpe:2.3:o:cisco:rv345p_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv345_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv134w_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv132w_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv260p_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv260w_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv134w_firmware:1.0.1.14:::::::* cpe:2.3:h:cisco:rv260p:-:::::::* cpe:2.3:h:cisco:rv160w:-:::::::* cpe:2.3:o:cisco:rv260_firmware:1.0.1.14:::::::* cpe:2.3:h:cisco:rv260w:-:::::::* cpe:2.3:o:cisco:rv260w_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv340_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv345p_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv132w_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv160_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv160w_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv260_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv160w_firmware:1.0.1.14:::::::* cpe:2.3:o:cisco:rv160_firmware:1.0.0.14:::::::* cpe:2.3:h:cisco:rv132w:-:::::::* cpe:2.3:o:cisco:rv345_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv340_firmware:1.0.1.20:::::::* cpe:2.3:h:cisco:rv345:-:::::::* cpe:2.3:h:cisco:rv134w:-:::::::* cpe:2.3:h:cisco:rv345p:-:::::::* cpe:2.3:o:cisco:rv160w_firmware:1.0.1.20:::::::* cpe:2.3:o:cisco:rv132w_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv340_firmware:1.0.0.14:::::::* cpe:2.3:o:cisco:rv345p_firmware:1.0.0.14:::::::*

08 Apr 2021, 05:15

Type	Values Removed	Values Added
Summary	Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).	Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

08 Apr 2021, 04:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-04-08 04:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-1309

Mitre link : CVE-2021-1309

CVE.ORG link : CVE-2021-1309

JSON object : View

Products Affected

cisco

rv345p
rv340w_firmware
rv260p_firmware
rv260p
rv160
rv340
rv340_firmware
rv132w
rv160w_firmware
rv260
rv260w
rv260_firmware
rv132w_firmware
rv345_firmware
rv260w_firmware
rv134w
rv160_firmware
rv134w_firmware
rv340w
rv345p_firmware
rv345
rv160w

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

8.8 /10