title: Junos OS: Firewall filter terms named "internal-1" and "internal-2" being ignored
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.
problem types: CWE-284 Improper Access Control
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 12.1X46
status: affected, version: 12.3X48
status: affected, version: 12.3
lessThan: 14.1X53-D130, 14.1X53-D49, status: affected, version: 14.1X53, versionType: custom
lessThan: 15.1F6-S12, 15.1R7-S4, status: affected, version: 15.1, versionType: custom
lessThan: 15.1X49-D161, 15.1X49-D170, status: affected, version: 15.1X49, versionType: custom
lessThan: 15.1X53-D236, 15.1X53-D496, 15.1X53-D69, status: affected, version: 15.1X53, versionType: custom
lessThan: 16.1R7-S4, 16.1R7-S5, status: affected, version: 16.1, versionType: custom
lessThan: 16.2R2-S9, status: affected, version: 16.2, versionType: custom
lessThan: 17.1R3, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R1-S8, 17.2R3-S1, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R3-S4, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R1-S7, 17.4R2-S3, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R2-S4, 18.1R3-S4, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R1-S5, 18.2R2-S1, status: affected, version: 18.2, versionType: custom
lessThan: 18.2X75-D40, status: affected, version: 18.2X75, versionType: custom
lessThan: 18.3R1-S3, status: affected, version: 18.3, versionType: custom
lessThan: 18.4R1-S1, 18.4R1-S2, status: affected, version: 18.4, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 7.2
baseSeverity: HIGH
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
version: 3.0
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue: Junos OS 14.1X53-D130, 14.1X53-D49, 15.1F6-S12, 15.1R7-S4, 15.1X49-D161, 15.1X49-D170, 15.1X53-D236, 15.1X53-D496, 15.1X53-D69, 16.1R7-S4, 16.2R2-S9, 17.1R3, 17.2R1-S8, 17.2R3-S1, 17.3R3-S4, 17.4R1-S7, 17.4R2-S3, 18.1R2-S4, 18.1R3-S4, 18.2R1-S5, 18.2R2-S1, 18.2X75-D40, 18.3R1-S3, 18.4R1-S1, 19.1R1, and all subsequent releases.
Note: Fixes are not available for Junos OS 12.1X46, 12.3X48, or 12.3R12 due to the high risk of making changes to earlier releases, and the easily implemented available workaround.
workarounds: Avoid configuring firewall filter names of the format: internal-n.