Riskcovery

CVE-2018-0021

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

State
Published
Severity
8.8 High
Published
Apr 11, 2018
Updated
Sep 17, 2024
Reserved
Nov 16, 2017

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.08.8 HighCVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Hjuniper

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
Junos OSJuniper Networks
  • 14.1 to before 14.1R10, 14.1R9Affected
  • 14.1X53 to before 14.1X53-D47Affected
  • 15.1 to before 15.1R4-S9, 15.1R6-S6, 15.1R7Affected
  • 15.1X49 to before 15.1X49-D100Affected
  • 15.1X53 to before 15.1X53-D59Affected
  • 16.1 to before 16.1R3-S8, 16.1R4-S8, 16.1R5Affected
  • 16.2 to before 16.2R1-S6, 16.2R2Affected
  • 17.1 to before 17.1R2Affected

References

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