CVE-2020-1604

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.

Remediation

Solution:

  • 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.

Workaround:

  • There are no known workarounds for this issue.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10983 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1604?
CVE-2020-1604 has been scored as a medium severity vulnerability.
How to fix CVE-2020-1604?
To fix CVE-2020-1604: 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.
Is CVE-2020-1604 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-1604 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1604?
CVE-2020-1604 affects Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS.
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