CVE-2019-0039: Junos OS: Login credentials are vulnerable to brute force attacks through the REST API
If REST API is enabled, the Junos OS login credentials are vulnerable to brute force attacks. The high default connection limit of the REST API may allow an attacker to brute-force passwords using advanced scripting techniques. Additionally, administrators who do not enforce a strong password policy can increase the likelihood of success from brute force attacks. Affected releases are Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S3; 15.1X49 versions prior to 15.1X49-D160; 15.1X53 versions prior to 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3; 16.1X65 versions prior to 16.1X65-D49; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S10, 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R3-S1; 17.3 versions prior to 17.3R3-S2; 17.4 versions prior to 17.4R1-S6, 17.4R2-S2; 18.1 versions prior to 18.1R2-S4, 18.1R3-S1; 18.2 versions prior to 18.2R1-S5; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R1-S1.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2019-0039?
CVE-2019-0039 has a high severity rating due to the potential for brute force attacks on Junos OS login credentials.
How do I fix CVE-2019-0039?
To fix CVE-2019-0039, it is recommended to disable the REST API if not needed, or to enforce strong password policies.
Which versions of Junos OS are affected by CVE-2019-0039?
CVE-2019-0039 affects multiple versions of Junos OS, specifically from versions prior to 15.1 up to 18.1.
What type of attack is possible with CVE-2019-0039?
CVE-2019-0039 allows attackers to perform brute force attacks on the Junos OS login credentials via the enabled REST API.
Are there any mitigations for CVE-2019-0039?
Mitigations for CVE-2019-0039 include implementing robust account lockout policies and increasing password complexity.