CVE-2021-31371

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 19-10-2021 09:15

Last modified: - 13-05-2022 07:22

Total changes: - 3

Description

Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP addresses may egress an QFX5000 Series switch, leaking configuration information such as heartbeats, kernel versions, etc. out to the Internet, leading to an information exposure vulnerability. This issue affects Juniper Networks Junos OS on QFX5110, QFX5120, QFX5200, QFX5210 Series, and QFX5100 with QFX 5e Series image installed: All versions prior to 17.3R3-S12; 18.1 versions prior to 18.1R3-S13; 18.3 versions prior to 18.3R3-S5; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2;

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Low

Attack complexity

Network

Attack vector

None

Availability

Low

Confidentiality

None

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

5.3

Base score

3.9

1.4

Exploitability score

Impact score

Verification logic

AND

vendor=juniper AND product=junos AND version=17.3 AND update=r1

vendor=juniper AND product=junos AND version=17.3 AND update=r2

vendor=juniper AND product=junos AND version=17.3 AND update=r2-s2

vendor=juniper AND product=junos AND version=17.3 AND update=r3

vendor=juniper AND product=junos AND version=18.1 AND update=r1

vendor=juniper AND product=junos AND version=18.1 AND update=r3

vendor=juniper AND product=junos AND version=17.3 AND update=r1-s4

vendor=juniper AND product=junos AND version=18.1 AND update=r2

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s1

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s1

vendor=juniper AND product=junos AND version=17.3 AND update=-

vendor=juniper AND product=junos AND version=17.3 AND update=r2-s1

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s2

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s3

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s4

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s5

vendor=juniper AND product=junos AND version=18.1 AND update=-

vendor=juniper AND product=junos AND version=18.1 AND update=r2-s1

vendor=juniper AND product=junos AND version=18.1 AND update=r2-s2

vendor=juniper AND product=junos AND version=18.1 AND update=r2-s4

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s1

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s2

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s3

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s4

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s5

vendor=juniper AND product=junos AND version=18.3 AND update=-

vendor=juniper AND product=junos AND version=18.3 AND update=r1

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s2

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s3

vendor=juniper AND product=junos AND version=18.3 AND update=r2

vendor=juniper AND product=junos AND version=17.3 AND update=r1-s1

vendor=juniper AND product=junos AND version=17.3 AND update=r2-s3

vendor=juniper AND product=junos AND version=17.3 AND update=r2-s4

vendor=juniper AND product=junos AND version=17.3 AND update=r2-s5

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s6

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s7

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s6

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s7

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s8

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s9

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s4

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s5

vendor=juniper AND product=junos AND version=18.3 AND update=r1-s6

vendor=juniper AND product=junos AND version=18.3 AND update=r2-s1

vendor=juniper AND product=junos AND version=18.3 AND update=r2-s2

vendor=juniper AND product=junos AND version=18.3 AND update=r2-s3

vendor=juniper AND product=junos AND version=18.3 AND update=r3

vendor=juniper AND product=junos AND version=18.3 AND update=r3-s1

vendor=juniper AND product=junos AND version=19.1 AND update=-

vendor=juniper AND product=junos AND version=19.1 AND update=r1

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s1

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s2

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s3

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s4

vendor=juniper AND product=junos AND version=19.1 AND update=r2

vendor=juniper AND product=junos AND version=19.2 AND update=-

vendor=juniper AND product=junos AND version=19.2 AND update=r1

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s1

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s2

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s3

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s4

vendor=juniper AND product=junos AND version=19.3 AND update=-

vendor=juniper AND product=junos AND version=19.3 AND update=r1

vendor=juniper AND product=junos AND version=19.3 AND update=r1-s1

vendor=juniper AND product=junos AND version=19.3 AND update=r2

vendor=juniper AND product=junos AND version=19.3 AND update=r2-s1

vendor=juniper AND product=junos AND version=19.3 AND update=r2-s2

vendor=juniper AND product=junos AND version=19.4 AND update=r1

vendor=juniper AND product=junos AND version=19.4 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.1 AND update=r1

vendor=juniper AND product=junos AND versionEndIncluding=17.2

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s10

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s11

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s8

vendor=juniper AND product=junos AND version=17.3 AND update=r3-s9

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s10

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s11

vendor=juniper AND product=junos AND version=18.1 AND update=r3-s12

vendor=juniper AND product=junos AND version=18.3 AND update=r2-s4

vendor=juniper AND product=junos AND version=18.3 AND update=r3-s2

vendor=juniper AND product=junos AND version=18.3 AND update=r3-s3

vendor=juniper AND product=junos AND version=18.3 AND update=r3-s4

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s5

vendor=juniper AND product=junos AND version=19.1 AND update=r1-s6

vendor=juniper AND product=junos AND version=19.1 AND update=r2-s1

vendor=juniper AND product=junos AND version=19.1 AND update=r2-s2

vendor=juniper AND product=junos AND version=19.1 AND update=r2-s3

vendor=juniper AND product=junos AND version=19.1 AND update=r3

vendor=juniper AND product=junos AND version=19.1 AND update=r3-s1

vendor=juniper AND product=junos AND version=19.1 AND update=r3-s2

vendor=juniper AND product=junos AND version=19.1 AND update=r3-s3

vendor=juniper AND product=junos AND version=19.1 AND update=r3-s4

vendor=juniper AND product=junos AND version=19.1 AND update=r3-s5

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s5

vendor=juniper AND product=junos AND version=19.2 AND update=r1-s6

vendor=juniper AND product=junos AND version=19.2 AND update=r2

vendor=juniper AND product=junos AND version=19.2 AND update=r2-s1

vendor=juniper AND product=junos AND version=19.2 AND update=r3

vendor=juniper AND product=junos AND version=19.2 AND update=r3-s1

vendor=juniper AND product=junos AND version=19.2 AND update=r3-s2

vendor=juniper AND product=junos AND version=19.3 AND update=r2-s3

vendor=juniper AND product=junos AND version=19.3 AND update=r2-s4

vendor=juniper AND product=junos AND version=19.3 AND update=r2-s5

vendor=juniper AND product=junos AND version=19.3 AND update=r3

vendor=juniper AND product=junos AND version=19.3 AND update=r3-s1

vendor=juniper AND product=junos AND version=19.3 AND update=r3-s2

vendor=juniper AND product=junos AND version=19.4 AND update=r1-s2

vendor=juniper AND product=junos AND version=19.4 AND update=r1-s3

vendor=juniper AND product=junos AND version=19.4 AND update=r2

vendor=juniper AND product=junos AND version=19.4 AND update=r2-s1

vendor=juniper AND product=junos AND version=19.4 AND update=r2-s2

vendor=juniper AND product=junos AND version=19.4 AND update=r2-s3

vendor=juniper AND product=junos AND version=19.4 AND update=r2-s4

vendor=juniper AND product=junos AND version=19.4 AND update=r2-s5

vendor=juniper AND product=junos AND version=19.4 AND update=r3

vendor=juniper AND product=junos AND version=19.4 AND update=r3-s1

vendor=juniper AND product=junos AND version=19.4 AND update=r3-s2

vendor=juniper AND product=junos AND version=19.4 AND update=r3-s3

vendor=juniper AND product=junos AND version=19.4 AND update=r3-s4

vendor=juniper AND product=junos AND version=20.1 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.1 AND update=r1-s2

vendor=juniper AND product=junos AND version=20.1 AND update=r1-s3

vendor=juniper AND product=junos AND version=20.1 AND update=r1-s4

vendor=juniper AND product=junos AND version=20.1 AND update=r2

vendor=juniper AND product=junos AND version=20.1 AND update=r2-s1

vendor=juniper AND product=junos AND version=20.1 AND update=r3

vendor=juniper AND product=junos AND version=20.2 AND update=r1

vendor=juniper AND product=junos AND version=20.2 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.2 AND update=r1-s2

vendor=juniper AND product=junos AND version=20.2 AND update=r1-s3

vendor=juniper AND product=junos AND version=20.2 AND update=r2

vendor=juniper AND product=junos AND version=20.2 AND update=r2-s1

vendor=juniper AND product=junos AND version=20.2 AND update=r2-s2

vendor=juniper AND product=junos AND version=20.2 AND update=r2-s3

vendor=juniper AND product=junos AND version=20.2 AND update=r3

vendor=juniper AND product=junos AND version=20.2 AND update=r3-s1

vendor=juniper AND product=junos AND version=20.3 AND update=r1

vendor=juniper AND product=junos AND version=20.3 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.3 AND update=r2

vendor=juniper AND product=junos AND version=20.3 AND update=r2-s1

vendor=juniper AND product=junos AND version=20.3 AND update=r3

vendor=juniper AND product=junos AND version=20.4 AND update=r1

vendor=juniper AND product=junos AND version=20.4 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.4 AND update=r2

vendor=juniper AND product=junos AND version=21.1 AND update=r1

vendor=juniper AND product=qfx5110 AND version=-

vendor=juniper AND product=qfx5100 AND version=-

vendor=juniper AND product=qfx5200 AND version=-

vendor=juniper AND product=qfx5120 AND version=-

vendor=juniper AND product=qfx5210 AND version=-

Reference

https://kb.juniper.net/JSA11236

Keywords

CVE-2021-31371

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-31371

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures