TI-2019-00038 Aliases CVE-2019-0039 GHSA-6q78-gprw-j4gg

Junos OS: Login credentials are vulnerable to brute force attacks through the REST API

LOW 38CWE-307Published 2019-04-10 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-307.

Summary

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.

Why it matters now

EPSS 0.01285 70th percentileScored 2026-11-07

Fix Fixed Junos OS (Juniper Networks): 14.1X53-D49, 15.1F6-S12, 15.1R7-S3 +23

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Juniper	Junos OS	14.1X53 to before 14.1X53-D49; 15.1 to before 15.1F6-S12, 15.1R7-S3; 15.1X49 to before 15.1X49-D160; 15.1X53 to before 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69; 16.1 to before 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3; 16.1X65 to before 16.1X65-D49; 16.2 to before 16.2R2-S7; 17.1 to before 17.1R2-S10, 17.1R3; 17.2 to before 17.2R1-S8, 17.2R3-S1; 17.3 to before 17.3R3-S2; 17.4 to before 17.4R1-S6, 17.4R2-S2; 18.1 to before 18.1R2-S4, 18.1R3-S1; 18.2 to before 18.2R1-S5; 18.2X75 to before 18.2X75-D30; 18.3 to before 18.3R1-S1	14.1X53-D49, 15.1F6-S12, 15.1R7-S3, 15.1X49-D160, 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3, 16.1X65-D49, 16.2R2-S7, 17.1R2-S10, 17.1R3, 17.2R1-S8, 17.2R3-S1, 17.3R3-S2, 17.4R1-S6, 17.4R2-S2, 18.1R2-S4, 18.1R3-S1, 18.2R1-S5, 18.2X75-D30, 18.3R1-S1	Patch available	CNA

Junos OS VendorJuniper Affected 14.1X53 to before 14.1X53-D49; 15.1 to before 15.1F6-S12, 15.1R7-S3; 15.1X49 to before 15.1X49-D160; 15.1X53 to before 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69; 16.1 to before 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3; 16.1X65 to before 16.1X65-D49; 16.2 to before 16.2R2-S7; 17.1 to before 17.1R2-S10, 17.1R3; 17.2 to before 17.2R1-S8, 17.2R3-S1; 17.3 to before 17.3R3-S2; 17.4 to before 17.4R1-S6, 17.4R2-S2; 18.1 to before 18.1R2-S4, 18.1R3-S1; 18.2 to before 18.2R1-S5; 18.2X75 to before 18.2X75-D30; 18.3 to before 18.3R1-S1 Fixed in 14.1X53-D49, 15.1F6-S12, 15.1R7-S3, 15.1X49-D160, 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3, 16.1X65-D49, 16.2R2-S7, 17.1R2-S10, 17.1R3, 17.2R1-S8, 17.2R3-S1, 17.3R3-S2, 17.4R1-S6, 17.4R2-S2, 18.1R2-S4, 18.1R3-S1, 18.2R1-S5, 18.2X75-D30, 18.3R1-S1 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:juniper:junos::::::::	14.1x53 to before 14.1x53-d49; 15.1 to before 15.1f6-s12; 15.1x49 to before 15.1x49-d160; 15.1x53 to before 15.1x53-d236; 16.1 to before 16.1r3-s10; 16.1x65 to before 16.1x65-d49; 16.2 to before 16.2r2-s7; 17.1 to before 17.1r2-s10; 17.2 to before 17.2r1-s8; 17.3 to before 17.3r3-s2; 17.4 to before 17.4r1-s6; 18.1 to before 18.1r2-s4; 18.2 to before 18.2r1-s5; 18.2x75 to before 18.2x75-d30; 18.3 to before 18.3r1-s1	Vulnerable	Juniper

cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* Versions 14.1x53 to before 14.1x53-d49; 15.1 to before 15.1f6-s12; 15.1x49 to before 15.1x49-d160; 15.1x53 to before 15.1x53-d236; 16.1 to before 16.1r3-s10; 16.1x65 to before 16.1x65-d49; 16.2 to before 16.2r2-s7; 17.1 to before 17.1r2-s10; 17.2 to before 17.2r1-s8; 17.3 to before 17.3r3-s2; 17.4 to before 17.4r1-s6; 18.1 to before 18.1r2-s4; 18.2 to before 18.2r1-s5; 18.2x75 to before 18.2x75-d30; 18.3 to before 18.3r1-s1 Vulnerable ·Juniper

Remediation

Fix · CNA Junos OS (Juniper Networks) Fixed in 14.1X53-D49, 15.1F6-S12, 15.1R7-S3, 15.1X49-D160, 15.1X53-D236, 15.1X53-D495, 15.1X53-D591, 15.1X53-D69, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S3, 16.1X65-D49, 16.2R2-S7, 17.1R2-S10, 17.1R3, 17.2R1-S8, 17.2R3-S1, 17.3R3-S2, 17.4R1-S6, 17.4R2-S2, 18.1R2-S4, 18.1R3-S1, 18.2R1-S5, 18.2X75-D30, 18.3R1-S1

Timeline

2026-10-02 Threatist record created from CVE-2019-0039
2026-10-03 Alias added: GHSA-6q78-gprw-j4gg

References

Advisory 1

https://kb.juniper.net/JSA10928

TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3

See all 792 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences