title: Junos OS: MX Series: Denial of Service vulnerability in MS-PIC component on MS-MIC or MS-MPC
description: On Juniper Networks Junos MX Series with service card configured, receipt of a stream of specific packets may crash the MS-PIC component on MS-MIC or MS-MPC. By continuously sending these specific packets, an attacker can repeatedly bring down MS-PIC on MS-MIC/MS-MPC causing a prolonged Denial of Service. This issue affects MX Series devices using MS-PIC, MS-MIC or MS-MPC service cards with any service configured. This issue affects Juniper Networks Junos OS on MX Series: 17.2R2-S7; 17.3R3-S4, 17.3R3-S5; 17.4R2-S4 and the subsequent SRs (17.4R2-S5, 17.4R2-S6, etc.); 17.4R3; 18.1R3-S3, 18.1R3-S4, 18.1R3-S5, 18.1R3-S6, 18.1R3-S7, 18.1R3-S8; 18.2R3, 18.2R3-S1, 18.2R3-S2; 18.3R2 and the SRs based on 18.3R2; 18.4R2 and the SRs based on 18.4R2; 19.1R1 and the SRs based on 19.1R1; 19.2R1 and the SRs based on 19.2R1; 19.3R1 and the SRs based on 19.3R1.
problem types: TBD
affected:
{
platforms: MX Series
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 17.2R2-S7
status: affected, version: 17.3R3-S4, 17.3R3-S5
status: affected, version: 17.4R3
status: affected, version: 18.1R3-S3, 18.1R3-S4, 18.1R3-S5, 18.1R3-S6, 18.1R3-S7, 18.1R3-S8
status: affected, version: 18.2R3, 18.2R3-S1, 18.2R3-S2
lessThan: 17.4*, status: affected, version: 17.4R2-S4, versionType: custom
changes: [at: 18.3R3, status: unaffected], lessThan: 18.3*, status: affected, version: 18.3R2, versionType: custom
changes: [at: 18.4R3, status: unaffected], lessThan: 18.4*, status: affected, version: 18.4R2, versionType: custom
changes: [at: 19.1R3, status: unaffected], lessThan: 19.1*, status: affected, version: 19.1R1, versionType: custom
changes: [at: 19.2R2, status: unaffected], lessThan: 19.2*, status: affected, version: 19.2R1, versionType: custom
changes: [at: 19.3R3, status: unaffected], lessThan: 19.3*, status: affected, version: 19.3R1, 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: 17.2R2-S8, 17.3R3-S6, 17.4R3-S1, 18.1R3-S9, 18.2R3-S3, 18.3R3, 18.4R3, 19.1R2, 19.2R2, 19.3R2, 19.4R1, and all subsequent releases.
workarounds: There are no known workarounds for this issue.