CVE-2018-0021

Junos OS: Short MacSec keys may allow man-in-the-middle attacks.

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

If all 64 digits of the connectivity association name (CKN) key or all 32 digits of the connectivity association key (CAK) key are not configured, all remaining digits will be auto-configured to 0. Hence, Juniper devices configured with short MacSec keys are at risk to an increased likelihood that an attacker will discover the secret passphrases configured for these keys through dictionary-based and brute-force-based attacks using spoofed packets. Affected releases are Juniper Networks Junos OS: 14.1 versions prior to 14.1R10, 14.1R9; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D100; 15.1X53 versions prior to 15.1X53-D59; 16.1 versions prior to 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 versions prior to 16.2R1-S6, 16.2R2; 17.1 versions prior to 17.1R2.

Si no se configuran todos los 64 dígitos del nombre de la clave de asociación de conectividad (CNK) o todos los 32 dígitos de la clave de asociación de conectividad (CAK), el resto de dígitos se configurarán automáticamente a 0. Por lo tanto, los dispositivos Juniper configurados con claves MacSec cortas están en riesgo de que sea más probable que un atacante descubra las frases de contraseñas secretas configuradas para estas claves a través de ataques basados en diccionario y de fuerza bruta mediante paquetes suplantados. Las versiones afectadas son Juniper Networks Junos OS: 14.1 anteriores a 14.1R10, 14.1R9; 14.1X53 anteriores a 14.1X53-D47; 15.1 anteriores a 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 anteriores a 15.1X49-D100; 15.1X53 anteriores a 15.1X53-D59; 16.1 anteriores a 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 anteriores a 16.2R1-S6, 16.2R2 y 17.1 anteriores a 17.1R2.

*Credits: N/A

CVSS Scores

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-16 CVE Reserved
2018-04-11 CVE Published
2023-09-02 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (2)

URL	Tag	Source
http://www.securitytracker.com/id/1040789	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://kb.juniper.net/JSA10854	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d10		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d20		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d30		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d35		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d40		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d45		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d50		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d55		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d60		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d65		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d70		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d75		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d80		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x49 Search vendor "Juniper" for product "Junos" and version "15.1x49"		d90		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r5		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r6		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r7		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1 Search vendor "Juniper" for product "Junos" and version "14.1"		r9		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d10		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d15		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d16		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d25		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d26		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d27		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d30		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d35		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d40		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				14.1x53 Search vendor "Juniper" for product "Junos" and version "14.1x53"		d45		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d10		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d20		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d21		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d30		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d32		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d33		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d34		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d50		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d51		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d52		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d55		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d57		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1x53 Search vendor "Juniper" for product "Junos" and version "15.1x53"		d58		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				16.1 Search vendor "Juniper" for product "Junos" and version "16.1"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				16.1 Search vendor "Juniper" for product "Junos" and version "16.1"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				16.1 Search vendor "Juniper" for product "Junos" and version "16.1"		r3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				16.1 Search vendor "Juniper" for product "Junos" and version "16.1"		r4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				16.2 Search vendor "Juniper" for product "Junos" and version "16.2"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.1 Search vendor "Juniper" for product "Junos" and version "17.1"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		r3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		r4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				15.1 Search vendor "Juniper" for product "Junos" and version "15.1"		r6		Affected