8.8

CVE-2018-0021: juniper networks junos os

CVSS: 8.8v3.0HighModified
Published 11-04-2018Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2018-0021 is a high (CVSS 8.8) vulnerability in juniper networks junos os. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.6% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.0 (CVE.org)
EPSS score
0.60%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-04-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

-0.01 pp

From 0.61% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Juniper1 product
  • junos15.1x49 | 15.1x49:d10 | 15.1x49:d20 | 15.1x49:d30 | 15.1x49:d35 | 15.1x49:d40 | 15.1x49:d45 | 15.1x49:d50 | 15.1x49:d55 | 15.1x49:d60 | 15.1x49:d65 | 15.1x49:d70 | 15.1x49:d75 | 15.1x49:d80 | 15.1x49:d90 | 14.1 | 14.1:r1 | 14.1:r2 | 14.1:r3 | 14.1:r4 | 14.1:r5 | 14.1:r6 | 14.1:r7 | 14.1:r9 | 14.1x53 | 14.1x53:d10 | 14.1x53:d15 | 14.1x53:d16 | 14.1x53:d25 | 14.1x53:d26 | 14.1x53:d27 | 14.1x53:d30 | 14.1x53:d35 | 14.1x53:d40 | 14.1x53:d45 | 15.1x53 | 15.1x53:d10 | 15.1x53:d20 | 15.1x53:d21 | 15.1x53:d30 | 15.1x53:d32 | 15.1x53:d33 | 15.1x53:d34 | 15.1x53:d50 | 15.1x53:d51 | 15.1x53:d52 | 15.1x53:d55 | 15.1x53:d57 | 15.1x53:d58 | 16.1:r1 | 16.1:r2 | 16.1:r3 | 16.1:r4 | 16.2:r1 | 17.1:r1 | 15.1 | 15.1:r1 | 15.1:r2 | 15.1:r3 | 15.1:r4 | 15.1:r6
Juniper networks1 product
  • junos os≥ 14.1, < 14.1R10, 14.1R9 | ≥ 14.1X53, < 14.1X53-D47 | ≥ 15.1, < 15.1R4-S9, 15.1R6-S6, 15.1R7 | ≥ 15.1X49, < 15.1X49-D100 | ≥ 15.1X53, < 15.1X53-D59 | ≥ 16.1, < 16.1R3-S8, 16.1R4-S8, 16.1R5 | ≥ 16.2, < 16.2R1-S6, 16.2R2 | ≥ 17.1, < 17.1R2

2 vendors · 2 products

References

2 links