CVE-2019-0036

Junos OS: Firewall filter terms named "internal-1" and "internal-2" being ignored

CRITICAL

9.8

CVSS Score

Published: April 10, 2019 at 08:13 PM UTC

Updated: June 17, 2026 at 02:07 AM UTC

1 product affected across 1 vendorJunos

Using Junos OS by Juniper Networks?

Get instant alerts when new vulnerabilities affect Junos OS - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

CRITICAL9.8

Exploit prediction

EPSS 1.0%

Description

When configuring a stateless firewall filter in Junos OS, terms named using the format "internal-n" (e.g. "internal-1", "internal-2", etc.) are silently ignored. No warning is issued during configuration, and the config is committed without error, but the filter criteria will match all packets leading to unexpected results. Affected releases are Juniper Networks Junos OS: All versions prior to and including 12.3; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D161, 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D236, 15.1X53-D496, 15.1X53-D69; 16.1 versions prior to 16.1R7-S4, 16.1R7-S5; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S7, 17.4R2-S3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S4; 18.2 versions prior to 18.2R1-S5, 18.2R2-S1; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3; 18.4 versions prior to 18.4R1-S1, 18.4R1-S2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v ≤ 12.314.1X53 ≤ v < 14.1X53-D130, 14.1X53-D4915.1 ≤ v < 15.1F6-S12, 15.1R7-S415.1X49 ≤ v < 15.1X49-D161, 15.1X49-D17015.1X53 ≤ v < 15.1X53-D236, 15.1X53-D496, 15.1X53-D6916.1 ≤ v < 16.1R7-S4, 16.1R7-S516.2 ≤ v < 16.2R2-S917.1 ≤ v < 17.1R317.2 ≤ v < 17.2R1-S8, 17.2R3-S117.3 ≤ v < 17.3R3-S417.4 ≤ v < 17.4R1-S7, 17.4R2-S318.1 ≤ v < 18.1R2-S4, 18.1R3-S418.2 ≤ v < 18.2R1-S5, 18.2R2-S118.2X75 ≤ v < 18.2X75-D4018.3 ≤ v < 18.3R1-S318.4 ≤ v < 18.4R1-S1, 18.4R1-S212.1X46 12.3 12.3X48 14.1X5314.1x5314.1x53 d10 14.1x53 d15 14.1x53 d16 14.1x53 d25 14.1x53 d26 14.1x53 d27 14.1x53 d30 14.1x53 d35 14.1x53 d40 14.1x53 d42 14.1x53 d43 14.1x53 d44 14.1x53 d45 14.1x53 d4614.1x53 d4714.1x53 d48 15.1 15.1 f1 15.1 f2 15.1 f3 15.1 f4 15.1 f5 15.1 f6 15.1 r1 15.1 r2 15.1 r3 15.1 r4 15.1 r5 15.1 r6 15.1X49 15.1X53 15.1f6-s1 f6 15.1f6-s10 f6 15.1f6-s11 f6 15.1f6-s2 f6 15.1f6-s4 f6 15.1f6-s5 f6 15.1f6-s6 f6 15.1f6-s7 f6 15.1f6-s8 f6 15.1f6-s9 f6 15.1x49 d10 15.1x49 d100 15.1x49 d110 15.1x49 d120 15.1x49 d130 15.1x49 d150 15.1x49 d20 15.1x49 d30 15.1x49 d35 15.1x49 d40 15.1x49 d45 15.1x49 d50 15.1x49 d55 15.1x49 d60 15.1x49 d65 15.1x49 d70 15.1x49 d75 15.1x49 d80 15.1x49 d90 15.1x53 d10 15.1x53 d20 15.1x53 d21 15.1x53 d210 15.1x53 d230 15.1x53 d231 15.1x53 d23215.1x53 d23315.1x53 d25 15.1x53 d30 15.1x53 d32 15.1x53 d33 15.1x53 d34 15.1x53 d40 15.1x53 d45 15.1x53 d495 15.1x53 d56 15.1x53 d60 15.1x53 d61 15.1x53 d62 15.1x53 d63 16.1 16.1 r1 16.1 r2 16.1 r3 16.1 r4 16.1 r5 16.1 r6 16.1 r7 16.2 17.1 17.2 17.2 r1 17.2 r1-s7 17.2 r2 17.2 r3 17.3 17.3 r1 17.3 r2 17.3 r3 17.3 r3-s1 17.3 r3-s2 17.3 r3-s3 17.4 17.4 r1 17.4 r2 18.1 18.1 r1 18.1 r2 18.2 18.2 r1 18.2 r1-s3 18.2 r2-s1 18.2 r2-s2 18.2X7518.2x7518.3 18.3 r1-s1 18.4 18.4 r1

Affected range stops below 14.1X53-D130, 14.1X53-D49, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1F6-S12, 15.1R7-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D161, 15.1X49-D170, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D236, 15.1X53-D496, 15.1X53-D69, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R7-S4, 16.1R7-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2R2-S9, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2R1-S8, 17.2R3-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R3-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R1-S7, 17.4R2-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1R2-S4, 18.1R3-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R1-S5, 18.2R2-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2X75-D40, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.3R1-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.4R1-S1, 18.4R1-S2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.juniper.net/JSA10925

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA10925

CVSS

9.8CRITICAL[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-284CWE-754

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card