title: Junos OS and Junos OS Evolved: In an BGP scenario RPD crashes upon receiving and processing a specific malformed ISO VPN BGP UPDATE packet
description:
An Improper Input Validation vulnerability in the routing protocol daemon (rpd) of Juniper Networks allows an attacker to cause a Denial of Service (DoS )to the device upon receiving and processing a specific malformed ISO VPN BGP UPDATE packet.
Continued receipt of this packet will cause a sustained Denial of Service condition.
This issue affects:
*  Juniper Networks Junos OS:
*  All versions prior to 20.4R3-S6;
*  21.1 versions prior to 21.1R3-S5;
*  21.2 versions prior to 21.2R3-S4;
*  21.3 versions prior to 21.3R3-S3;
*  21.4 versions prior to 21.4R3-S3;
*  22.1 versions prior to 22.1R2-S2, 22.1R3;
*  22.2 versions prior to 22.2R2-S1, 22.2R3;
*  22.3 versions prior to 22.3R1-S2, 22.3R2.
Juniper Networks Junos OS Evolved:
*  All versions prior to 20.4R3-S6-EVO;
*  21.1-EVO version 21.1R1-EVO and later versions prior to 21.2R3-S4-EVO;
*  21.3-EVO versions prior to 21.3R3-S3-EVO;
*  21.4-EVO versions prior to 21.4R3-S3-EVO;
*  22.1-EVO versions prior to 22.1R3-EVO;
*  22.2-EVO versions prior to 22.2R2-S1-EVO, 22.2R3-EVO;
*  22.3-EVO versions prior to 22.3R1-S2-EVO, 22.3R2-EVO.
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: unaffected
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 20.4R3-S6, status: affected, version: 0, versionType: semver
lessThan: 21.1R3-S5, status: affected, version: 21.1, versionType: semver
lessThan: 21.2R3-S4, status: affected, version: 21.2, versionType: semver
lessThan: 21.3R3-S3, status: affected, version: 21.3, versionType: semver
lessThan: 21.4R3-S3, status: affected, version: 21.4, versionType: semver
lessThan: 22.1R2-S2, 22.1R3, status: affected, version: 22.1, versionType: semver
lessThan: 22.2R2-S1, 22.2R3, status: affected, version: 22.2, versionType: semver
lessThan: 22.3R1-S2, 22.3R2, status: affected, version: 22.3, versionType: semver
}
{
defaultStatus: unaffected
product: Junos OS Evolved
vendor: Juniper Networks
versions:
lessThan: 20.4R3-S6-EVO, status: affected, version: 0, versionType: semver
lessThan: 21.1*-EVO, status: affected, version: 21.1R1-EVO, versionType: semver
lessThan: 21.2R3-S4-EVO, status: affected, version: 21.2-EVO, versionType: semver
lessThan: 21.3R3-S3-EVO, status: affected, version: 21.3-EVO, versionType: semver
lessThan: 21.4R3-S3-EVO, status: affected, version: 21.4-EVO, versionType: semver
lessThan: 22.1R3-EVO, status: affected, version: 22.1-EVO, versionType: semver
lessThan: 22.2R2-S1-EVO, 22.2R3-EVO, status: affected, version: 22.2-EVO, versionType: semver
lessThan: 22.3R1-S2-EVO, 22.3R2-EVO, status: affected, version: 22.3-EVO, versionType: semver
}
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
]
format: CVSS
scenarios: GENERAL
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: 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S3, 21.4R3-S3, 22.1R2-S2, 22.1R3, 22.2R2-S1, 22.2R3, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.
Junos OS Evolved: 20.4R3-S6-EVO, 21.2R3-S4-EVO, 21.3R3-S3-EVO, 21.4R3-S3-EVO, 22.1R3-EVO, 22.2R2-S1-EVO, 22.2R3-EVO, 22.3R1-S2-EVO, 22.3R2-EVO, 22.4R1-EVO, and all subsequent releases.
workarounds: There are no known workarounds for this issue.