CVE-2019-0039

High

Description

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.

SeverityHigh
CVSS8.1
Exploit probability—
ProductJuniper Junos
PublishedApr 10, 2019
First seenApr 10, 2019
Weakness typeCWE-307CWE-307

How to fix

Update
  • juniper junos14.1x53-d49, 15.1f6-s12, 15.1x49-d160, 15.1x53-d236, 16.1r3-s10, 16.1x65-d49, 16.2r2-s7, 17.1r2-s10, 17.2r1-s8, 17.3r3-s2, 17.4r1-s6, 18.1r2-s4, 18.2r1-s5, 18.2x75-d30, 18.3r1-s1 or later

Affected products

ProductAffected versionsFixed in
juniper junos14.1x53 ≤ v < 14.1x53-d49, 15.1 ≤ v < 15.1f6-s12, 15.1x49 ≤ v < 15.1x49-d160, 15.1x53 ≤ v < 15.1x53-d236, 16.1 ≤ v < 16.1r3-s10, 16.1x65 ≤ v < 16.1x65-d49, 16.2 ≤ v < 16.2r2-s7, 17.1 ≤ v < 17.1r2-s10, 17.2 ≤ v < 17.2r1-s8, 17.3 ≤ v < 17.3r3-s2, 17.4 ≤ v < 17.4r1-s6, 18.1 ≤ v < 18.1r2-s4, 18.2 ≤ v < 18.2r1-s5, 18.2x75 ≤ v < 18.2x75-d30, 18.3 ≤ v < 18.3r1-s114.1x53-d49, 15.1f6-s12, 15.1x49-d160, 15.1x53-d236, 16.1r3-s10, 16.1x65-d49, 16.2r2-s7, 17.1r2-s10, 17.2r1-s8, 17.3r3-s2, 17.4r1-s6, 18.1r2-s4, 18.2r1-s5, 18.2x75-d30, 18.3r1-s1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2019-0039 · Juniper Junos · Dark Radar