CVE-2020-1604: Junos OS: EX4300/EX4600/QFX3500/QFX5100 Series: Stateless IP firewall filter may fail to evaluate certain packets
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Junos OS (EX4300/EX4600/QFX3500/QFX5100 Series)to a version that resolves this vulnerability.Fixed in 14.1X53-D12 - Upgrade
Upgrade
Junos OS (QFX3500 Series)to a version that resolves this vulnerability.Fixed in 14.1X53-D48 - Upgrade
Upgrade
Junos OS (EX4300/EX4600/QFX5100 Series)to a version that resolves this vulnerability.Fixed in 14.1X53-D52 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 15.1R7-S3 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 16.1R7 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 17.1R3 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 17.2R3 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 17.3R2-S5 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 17.3R3 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 17.4R2 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 18.1R3 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 18.2R2 - Upgrade
Upgrade
Junos OS (EX4300 Series)to a version that resolves this vulnerability.Fixed in 18.3R1
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1604?
The severity of CVE-2020-1604 is classified as medium, primarily affecting specific packet evaluations by the IP firewall filter.
How do I fix CVE-2020-1604?
To fix CVE-2020-1604, you should update to the patched versions of Junos OS that address this vulnerability.
Which devices are affected by CVE-2020-1604?
CVE-2020-1604 affects Juniper devices including EX4300, EX4600, QFX3500, and QFX5100 Series running specific versions of Junos.
What is the impact of CVE-2020-1604?
The impact of CVE-2020-1604 may lead to incomplete firewall filter evaluations, potentially allowing certain packets to bypass security measures.
Is CVE-2020-1604 being actively exploited?
As of the latest information, there are no indications that CVE-2020-1604 is being actively exploited in the wild.