high
7.5
CWE
835
Advisory Published
Updated

CVE-2023-44181: Junos OS: QFX5k: l2 loop in the overlay impacts the stability in a EVPN/VXLAN environment

First published: Thu Oct 12 2023(Updated: )

An Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMPv6 packets are present on device. This issue affects Juniper Networks: Junos OS * All versions prior to 20.2R3-S6 on QFX5k; * 20.3 versions prior to 20.3R3-S5 on QFX5k; * 20.4 versions prior to 20.4R3-S5 on QFX5k; * 21.1 versions prior to 21.1R3-S4 on QFX5k; * 21.2 versions prior to 21.2R3-S3 on QFX5k; * 21.3 versions prior to 21.3R3-S2 on QFX5k; * 21.4 versions prior to 21.4R3 on QFX5k; * 22.1 versions prior to 22.1R3 on QFX5k; * 22.2 versions prior to 22.2R2 on QFX5k.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Junos OS Evolved<20.2
Junos OS Evolved=20.2
Junos OS Evolved=20.2-r1
Junos OS Evolved=20.2-r1-s1
Junos OS Evolved=20.2-r1-s2
Junos OS Evolved=20.2-r1-s3
Junos OS Evolved=20.2-r2
Junos OS Evolved=20.2-r2-s1
Junos OS Evolved=20.2-r2-s2
Junos OS Evolved=20.2-r2-s3
Junos OS Evolved=20.2-r3
Junos OS Evolved=20.2-r3-s1
Junos OS Evolved=20.2-r3-s2
Junos OS Evolved=20.2-r3-s3
Junos OS Evolved=20.2-r3-s4
Junos OS Evolved=20.2-r3-s5
Junos OS Evolved=20.3
Junos OS Evolved=20.3-r1
Junos OS Evolved=20.3-r1-s1
Junos OS Evolved=20.3-r1-s2
Junos OS Evolved=20.3-r2
Junos OS Evolved=20.3-r2-s1
Junos OS Evolved=20.3-r3
Junos OS Evolved=20.3-r3-s1
Junos OS Evolved=20.3-r3-s2
Junos OS Evolved=20.3-r3-s3
Junos OS Evolved=20.3-r3-s4
Junos OS Evolved=20.4
Junos OS Evolved=20.4-r1
Junos OS Evolved=20.4-r1-s1
Junos OS Evolved=20.4-r2
Junos OS Evolved=20.4-r2-s1
Junos OS Evolved=20.4-r2-s2
Junos OS Evolved=20.4-r3
Junos OS Evolved=20.4-r3-s1
Junos OS Evolved=20.4-r3-s2
Junos OS Evolved=20.4-r3-s3
Junos OS Evolved=20.4-r3-s4
Junos OS Evolved=21.1
Junos OS Evolved=21.1-r1
Junos OS Evolved=21.1-r1-s1
Junos OS Evolved=21.1-r2
Junos OS Evolved=21.1-r2-s1
Junos OS Evolved=21.1-r2-s2
Junos OS Evolved=21.1-r3
Junos OS Evolved=21.1-r3-s1
Junos OS Evolved=21.1-r3-s2
Junos OS Evolved=21.1-r3-s3
Junos OS Evolved=21.2
Junos OS Evolved=21.2-r1
Junos OS Evolved=21.2-r1-s1
Junos OS Evolved=21.2-r1-s2
Junos OS Evolved=21.2-r2
Junos OS Evolved=21.2-r2-s1
Junos OS Evolved=21.2-r2-s2
Junos OS Evolved=21.2-r3
Junos OS Evolved=21.2-r3-s1
Junos OS Evolved=21.2-r3-s2
Junos OS Evolved=21.3
Junos OS Evolved=21.3-r1
Junos OS Evolved=21.3-r1-s1
Junos OS Evolved=21.3-r1-s2
Junos OS Evolved=21.3-r2
Junos OS Evolved=21.3-r2-s1
Junos OS Evolved=21.3-r2-s2
Junos OS Evolved=21.3-r3
Junos OS Evolved=21.3-r3-s1
Junos OS Evolved=21.4
Junos OS Evolved=21.4-r1
Junos OS Evolved=21.4-r1-s1
Junos OS Evolved=21.4-r1-s2
Junos OS Evolved=21.4-r2
Junos OS Evolved=21.4-r2-s1
Junos OS Evolved=21.4-r2-s2
Junos OS Evolved=22.1-r1
Junos OS Evolved=22.1-r1-s1
Junos OS Evolved=22.1-r1-s2
Junos OS Evolved=22.1-r2
Junos OS Evolved=22.1-r2-s1
Junos OS Evolved=22.1-r2-s2
Junos OS Evolved=22.2
Junos OS Evolved=22.2-r1
Junos OS Evolved=22.2-r1-s1
Junos OS Evolved=22.2-r1-s2
Juniper QFX5110
Juniper QFK5120
Juniper QFX5130
Juniper QFX5200
Juniper QFX5210
Juniper Qfx5220
Juniper QFK5230
Juniper QFX5700

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS 20.2R3-S6, 20.3R3-S5, 20.4R3-S5, 21.1R3-S4, 21.2R3-S3, 21.3R3-S2, 21.4R3, 22.1R3, 22.2R2, 22.3R1, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-44181?

    CVE-2023-44181 has been classified as a high severity vulnerability due to its potential to cause Denial of Service (DDoS) conditions.

  • How do I fix CVE-2023-44181?

    To address CVE-2023-44181, it is recommended to update your Junos OS to a version that has patched this vulnerability.

  • Which Juniper devices are affected by CVE-2023-44181?

    CVE-2023-44181 affects Juniper Networks Junos OS QFX5k devices running specific versions of Junos software prior to the fix.

  • What kind of attacks can CVE-2023-44181 lead to?

    CVE-2023-44181 can lead to DDoS attacks resulting from improperly implemented storm control limits.

  • Is there a workaround for CVE-2023-44181?

    There are no documented workarounds for CVE-2023-44181, and updating to a secure version is the recommended action.

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