title: Junos OS and Junos OS Evolved: The rpd process will crash when a malformed incoming RESV message is processed
description: An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). When an incoming RESV message corresponding to a protected LSP is malformed it causes an incorrect internal state resulting in an rpd core. This issue affects: Juniper Networks Junos OS All versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R3-S8; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R1-S2, 21.2R3; 21.3 versions prior to 21.3R2. Juniper Networks Junos OS Evolved All versions prior to 20.2R3-S3-EVO; 20.3-EVO version 20.3R1-EVO and later versions; 20.4-EVO versions prior to 20.4R3-S1-EVO; 21.1-EVO version 21.1R1-EVO and later versions; 21.2-EVO version 21.2R1-EVO and later versions; 21.3-EVO versions prior to 21.3R2-EVO.
problem types: CWE-754 Improper Check for Unusual or Exceptional Conditions
affected:
{
vendor: Juniper Networks
product: Junos OS
versions:
version: unspecified, lessThan: 19.2R3-S6, status: affected, versionType: custom
version: 19.3, status: affected, lessThan: 19.3R3-S6, versionType: custom
version: 19.4, status: affected, lessThan: 19.4R3-S8, versionType: custom
version: 20.1, status: affected, lessThan: 20.1R3-S2, versionType: custom
version: 20.2, status: affected, lessThan: 20.2R3-S3, versionType: custom
version: 20.3, status: affected, lessThan: 20.3R3-S2, versionType: custom
version: 20.4, status: affected, lessThan: 20.4R3-S1, versionType: custom
version: 21.1, status: affected, lessThan: 21.1R3, versionType: custom
version: 21.2, status: affected, lessThan: 21.2R1-S2, 21.2R3, versionType: custom
version: 21.3, status: affected, lessThan: 21.3R2, versionType: custom
}
{
vendor: Juniper Networks
product: Junos OS Evolved
versions:
version: unspecified, lessThan: 20.2R3-S3-EVO, status: affected, versionType: custom
version: 20.3R1-EVO, status: affected, lessThan: 20.3-EVO*, versionType: custom
version: 20.4-EVO, status: affected, lessThan: 20.4R3-S1-EVO, versionType: custom
version: 21.1R1-EVO, status: affected, lessThan: 21.1-EVO*, versionType: custom
version: 21.2R1-EVO, status: affected, lessThan: 21.2-EVO*, versionType: custom
version: 21.3-EVO, status: affected, lessThan: 21.3R2-EVO, versionType: custom
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: ADJACENT_NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 5.3
baseSeverity: MEDIUM
]
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: 19.4R3-S8, 20.1R3-S2, 20.2R3-S3, 20.3R3-S2, 20.4R3-S1, 21.1R3, 21.2R1-S2, 21.2R3, 21.3R2, 21.4R1, and all subsequent releases.
Junos OS Evolved: 20.2R3-S3-EVO, 20.4R3-S1-EVO, 21.3R2-EVO, 21.4R1-EVO, and all subsequent releases.
workarounds: There are no viable workarounds for this issue.