title: Junos OS and Junos OS Evolved: An attacker sending a specific crafted BGP update message will crash RPD
description: In segment routing traffic engineering (SRTE) environments where the BGP Monitoring Protocol (BMP) feature is enable, a vulnerability in the Routing Protocol Daemon (RPD) process of Juniper Networks Junos OS allows an attacker to send a specific crafted BGP update message causing the RPD service to core, creating a Denial of Service (DoS) Condition. Continued receipt and processing of this update message will create a sustained Denial of Service (DoS) condition. This issue affects IPv4 and IPv6 environments. This issue affects: Juniper Networks Junos OS 17.4 versions 17.4R1 and above prior to 17.4R2-S6, 17.4R3; 18.1 versions prior to 18.1R3-S7; 18.2 versions prior to 18.2R2-S6, 18.2R3-S3; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R3; 19.1 versions prior to 19.1R1-S4, 19.1R2; 19.2 versions prior to 19.2R1-S3, 19.2R2, This issue does not affect Junos OS releases prior to 17.4R1. This issue affects: Juniper Networks Junos OS Evolved 19.2-EVO versions prior to 19.2R2-EVO.
problem types: Denial of Service (DoS)
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: unspecified, status: affected, version: 17.4R1, versionType: custom
lessThan: 17.4R2-S6, 17.4R3, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3-S7, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R2-S6, 18.2R3-S3, status: affected, version: 18.2, versionType: custom
lessThan: 18.3R1-S7, 18.3R2-S3, 18.3R3, status: affected, version: 18.3, versionType: custom
lessThan: 18.4R1-S5, 18.4R2-S3, 18.4R3, status: affected, version: 18.4, versionType: custom
lessThan: 19.1R1-S4, 19.1R2, status: affected, version: 19.1, versionType: custom
lessThan: 19.2R1-S3, 19.2R2, status: affected, version: 19.2, versionType: custom
}
{
product: Junos OS Evolved
vendor: Juniper Networks
versions:
lessThan:  19.2R2-EVO, status: affected, version: 19.2-EVO, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue:
Junos OS: 17.4R2-S6, 17.4R3, 18.1R3-S7, 18.2R2-S6, 18.2R3-S3, 18.3R1-S7, 18.3R2-S3, 18.3R3, 18.4R1-S5, 18.4R2-S3, 18.4R3, 19.1R1-S4, 19.1R2, 19.2R1-S3, 19.2R2, 19.3R1,  and all subsequent releases.
Junos OS Evolved: 19.2R2-EVO, and all subsequent releases.
workarounds: Disable BGP monitoring protocol until a fix can be applied.