high
7.1
CWE
20
Advisory Published
Updated

CVE-2024-21590: Junos OS Evolved: Packets which are not destined to the device can reach the RE

First published: Fri Apr 12 2024(Updated: )

An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS).  When specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: * All versions before 21.2R3-S8-EVO; * from 21.4-EVO before 21.4R3-S6-EVO; * from 22.2-EVO before 22.2R3-S4-EVO; * from 22.3-EVO before 22.3R3-S3-EVO; * from 22.4-EVO before 22.4R3-EVO; * from 23.2-EVO before 23.2R2-EVO. * from 23.4-EVO before 23.4R1-S1-EVO.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper Networks Junos OS Evolved<21.2R3-S8-EVO>=undefined>=undefined>=undefined>=undefined>=undefined>=undefined
Juniper Networks Junos OS Evolved<=21.2
Juniper Networks Junos OS Evolved=21.2-r1
Juniper Networks Junos OS Evolved=21.2-r1-s1
Juniper Networks Junos OS Evolved=21.2-r1-s2
Juniper Networks Junos OS Evolved=21.2-r2
Juniper Networks Junos OS Evolved=21.2-r2-s1
Juniper Networks Junos OS Evolved=21.2-r2-s2
Juniper Networks Junos OS Evolved=21.2-r3
Juniper Networks Junos OS Evolved=21.2-r3-s1
Juniper Networks Junos OS Evolved=21.2-r3-s2
Juniper Networks Junos OS Evolved=21.2-r3-s3
Juniper Networks Junos OS Evolved=21.2-r3-s4
Juniper Networks Junos OS Evolved=21.2-r3-s5
Juniper Networks Junos OS Evolved=21.2-r3-s6
Juniper Networks Junos OS Evolved=21.2-r3-s7
Juniper Networks Junos OS Evolved=21.4
Juniper Networks Junos OS Evolved=21.4-r1
Juniper Networks Junos OS Evolved=21.4-r1-s1
Juniper Networks Junos OS Evolved=21.4-r1-s2
Juniper Networks Junos OS Evolved=21.4-r2
Juniper Networks Junos OS Evolved=21.4-r2-s1
Juniper Networks Junos OS Evolved=21.4-r2-s2
Juniper Networks Junos OS Evolved=21.4-r3
Juniper Networks Junos OS Evolved=21.4-r3-s1
Juniper Networks Junos OS Evolved=21.4-r3-s2
Juniper Networks Junos OS Evolved=21.4-r3-s3
Juniper Networks Junos OS Evolved=21.4-r3-s4
Juniper Networks Junos OS Evolved=21.4-r3-s5
Juniper Networks Junos OS Evolved=22.2
Juniper Networks Junos OS Evolved=22.2-r1
Juniper Networks Junos OS Evolved=22.2-r1-s1
Juniper Networks Junos OS Evolved=22.2-r1-s2
Juniper Networks Junos OS Evolved=22.2-r2
Juniper Networks Junos OS Evolved=22.2-r2-s1
Juniper Networks Junos OS Evolved=22.2-r2-s2
Juniper Networks Junos OS Evolved=22.2-r3
Juniper Networks Junos OS Evolved=22.2-r3-s1
Juniper Networks Junos OS Evolved=22.2-r3-s2
Juniper Networks Junos OS Evolved=22.2-r3-s3
Juniper Networks Junos OS Evolved=22.3
Juniper Networks Junos OS Evolved=22.3-r1
Juniper Networks Junos OS Evolved=22.3-r1-s1
Juniper Networks Junos OS Evolved=22.3-r1-s2
Juniper Networks Junos OS Evolved=22.3-r2
Juniper Networks Junos OS Evolved=22.3-r2-s1
Juniper Networks Junos OS Evolved=22.3-r2-s2
Juniper Networks Junos OS Evolved=22.3-r3
Juniper Networks Junos OS Evolved=22.3-r3-s1
Juniper Networks Junos OS Evolved=22.3-r3-s2
Juniper Networks Junos OS Evolved=22.4
Juniper Networks Junos OS Evolved=22.4-r1
Juniper Networks Junos OS Evolved=22.4-r1-s1
Juniper Networks Junos OS Evolved=22.4-r1-s2
Juniper Networks Junos OS Evolved=22.4-r2
Juniper Networks Junos OS Evolved=22.4-r2-s1
Juniper Networks Junos OS Evolved=22.4-r2-s2
Juniper Networks Junos OS Evolved=23.2
Juniper Networks Junos OS Evolved=23.2-r1
Juniper Networks Junos OS Evolved=23.2-r1-s1
Juniper Networks Junos OS Evolved=23.2-r1-s2
Juniper Networks Junos OS Evolved=23.4
Juniper Networks Junos OS Evolved=23.4-r1

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS Evolved:21.2R3-S8-EVO, 21.4R3-S6-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, 23.4R1-S1-EVO, 24.1R1-EVO and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-21590?

    CVE-2024-21590 is considered a high severity vulnerability due to its potential to cause a Denial of Service.

  • How do I fix CVE-2024-21590?

    To remediate CVE-2024-21590, upgrade to the latest patched version of Junos OS Evolved as specified by Juniper Networks.

  • Who is affected by CVE-2024-21590?

    CVE-2024-21590 impacts versions of Juniper Networks Junos OS Evolved up to 21.2 and several subsequent versions.

  • What types of attacks can exploit CVE-2024-21590?

    An unauthenticated attacker within the MPLS administrative domain can exploit CVE-2024-21590 by sending specially crafted packets.

  • What are the potential impacts of CVE-2024-21590?

    The impacts of exploiting CVE-2024-21590 include disruption of service and Denial of Service conditions on affected devices.

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