Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Juniper | Junos | 15.1x49 |
References
- http://www.securitytracker.com/id/1040789Third Party AdvisoryVDB Entry
- https://kb.juniper.net/JSA10854Vendor Advisory
- http://www.securitytracker.com/id/1040789Third Party AdvisoryVDB Entry
- https://kb.juniper.net/JSA10854Vendor Advisory
FAQ
What is CVE-2018-0021?
CVE-2018-0021 is a vulnerability with a CVSS score of 8.8 (HIGH). 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. He...
How severe is CVE-2018-0021?
CVE-2018-0021 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0021?
Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos.