title: Junos OS: A local authenticated attacker can cause RPD to core
description: An Incorrect Permission Assignment for Critical Resource vulnerability of a certain file in the filesystem of Junos OS allows a local authenticated attacker to cause routing process daemon (RPD) to crash and restart, causing a Denial of Service (DoS). Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S7; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R1-S1, 20.4R2.
problem types: CWE-732 Incorrect Permission Assignment for Critical Resource
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1R7-S9, status: affected, version: 15.1, versionType: custom
lessThan: 17.3R3-S12, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R2-S13, 17.4R3-S5, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3-S13, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R3-S8, status: affected, version: 18.2, versionType: custom
lessThan: 18.3R3-S5, status: affected, version: 18.3, versionType: custom
lessThan: 18.4R2-S8, 18.4R3-S7, status: affected, version: 18.4, versionType: custom
lessThan: 19.1R2-S3, 19.1R3-S5, status: affected, version: 19.1, versionType: custom
lessThan: 19.2R3-S2, status: affected, version: 19.2, versionType: custom
lessThan: 19.3R2-S6, 19.3R3-S2, status: affected, version: 19.3, versionType: custom
lessThan: 19.4R1-S4, 19.4R2-S4, 19.4R3-S2, status: affected, version: 19.4, versionType: custom
lessThan: 20.1R2-S2, 20.1R3, status: affected, version: 20.1, versionType: custom
lessThan: 20.2R2-S3, 20.2R3, status: affected, version: 20.2, versionType: custom
lessThan: 20.3R3, status: affected, version: 20.3, versionType: custom
lessThan: 20.4R1-S1, 20.4R2, status: affected, version: 20.4, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 5.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/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: 15.1R7-S9, 17.3R3-S12, 17.4R2-S13, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R2-S8, 18.4R3-S7, 19.1R3-S5, 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R2-S4, 19.4R3-S2, 20.1R2-S2, 20.1R3, 20.2R2-S3, 20.2R3, 20.3R3, 20.4R1-S1, 20.4R2, 21.1R1, and all subsequent releases.
workarounds: To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.