title: Junos OS: EX4300/EX4600/QFX3500/QFX5100 Series: Stateless IP firewall filter may fail to evaluate certain packets
description: On EX4300, EX4600, QFX3500, and QFX5100 Series, a vulnerability in the IP firewall filter component may cause the firewall filter evaluation of certain packets to fail. This issue only affects firewall filter evaluation of certain packets destined to the device Routing Engine (RE). This issue does not affect the Layer 2 firewall filter evaluation nor does it affect the Layer 3 firewall filter evaluation destined to connected hosts. This issue may occur when evaluating both IPv4 or IPv6 packets. This issue affects Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D12 on QFX5100 Series and EX4600 Series; 14.1X53 versions prior to 14.1X53-D52 on QFX3500 Series; 14.1X53 versions prior to 14.1X53-D48 on EX4300 Series; 15.1 versions prior to 15.1R7-S3 on EX4300 Series; 16.1 versions prior to 16.1R7 on EX4300 Series; 17.1 versions prior to 17.1R3 on EX4300 Series; 17.2 versions prior to 17.2R3 on EX4300 Series; 17.3 versions prior to 17.3R2-S5, 17.3R3 on EX4300 Series; 17.4 versions prior to 17.4R2 on EX4300 Series; 18.1 versions prior to 18.1R3 on EX4300 Series; 18.2 versions prior to 18.2R2 on EX4300 Series.
problem types: CWE-284 Improper Access Control
affected:
{
platforms: QFX5100 Series and EX4600 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 14.1X53-D12, status: affected, version: 14.1X53, versionType: custom
}
{
platforms: QFX3500 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 14.1X53-D52, status: affected, version: 14.1X53, versionType: custom
}
{
platforms: EX4300 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 14.1X53-D48, status: affected, version: 14.1X53, versionType: custom
lessThan: 15.1R7-S3, status: affected, version: 15.1, versionType: custom
lessThan: 16.1R7, status: affected, version: 16.1, versionType: custom
lessThan: 17.1R3, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R3, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R2-S5, 17.3R3, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R2, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R2, status: affected, version: 18.2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
version: 3.1
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: For QFX5100 Series and EX4600 Series:
The following software releases have been updated to resolve this specific issue: 14.1X53-D12 and all subsequent releases.
For QFX3500 Series:
The following software releases have been updated to resolve this specific issue: 14.1X53-D52 and all subsequent releases.
For EX4300 Series:
The following software releases have been updated to resolve this specific issue: 14.1X53-D48, 15.1R7-S3, 16.1R7, 17.1R3, 17.2R3, 17.3R2-S5, 17.3R3, 17.4R2, 18.1R3, 18.2R2, 18.3R1 and all subsequent releases.
workarounds: There are no known workarounds for this issue.