CVE-2022-22219: Due to the Improper Handling of an Unexpected Data Type in the processing of EVPN routes on Juniper Networks Junos OS and Junos OS Evolved, an attacker in…

PriorityP431medium5.9CVSS 3.1

AVNACHPRNUINSUCNINAH

EPSS

0.56%

43.1th percentile

Due to the Improper Handling of an Unexpected Data Type in the processing of EVPN routes on Juniper Networks Junos OS and Junos OS Evolved, an attacker in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash, leading to a Denial of Service (DoS) condition. Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have 'leave-sync-route-oldstyle' enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.

Affected

16 ranges

Vendor	Product	Version range	Fixed in
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos_os	—	—
juniper	junos_os_evolved	—	—
juniper	junos_os_evolved	—	—
juniper	junos_os_evolved	—	—
juniper_networks	junos_os	>= 21.3 < 21.3R3-S2	21.3R3-S2
juniper_networks	junos_os	>= 21.4 < 21.4R2-S2, 21.4R3	21.4R2-S2, 21.4R3
juniper_networks	junos_os	>= 22.1 < 22.1R1-S2, 22.1R3	22.1R1-S2, 22.1R3
juniper_networks	junos_os	>= 22.2 < 22.2R2	22.2R2
juniper_networks	junos_os_evolved	>= 21.3R1-EVO < 21.3*	21.3*
juniper_networks	junos_os_evolved	>= 21.4 < 21.4R3-EVO	21.4R3-EVO
juniper_networks	junos_os_evolved	>= 22.1 < 22.1R1-S2-EVO, 22.1R3-EVO	22.1R1-S2-EVO, 22.1R3-EVO
juniper_networks	junos_os_evolved	>= 22.2 < 22.2R2-EVO	22.2R2-EVO

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