title: Junos OS: MPC7/8/9,  PTX-FPC3 (FPC-P1, FPC-P2) and PTX1K: Line card may crash upon receipt of specific MPLS packet.
description: Receipt of a specific MPLS packet may cause MPC7/8/9, PTX-FPC3 (FPC-P1, FPC-P2) line cards or PTX1K to crash and restart. By continuously sending specific MPLS packets, an attacker can repeatedly crash the line cards or PTX1K causing a sustained Denial of Service. Affected releases are Juniper Networks Junos OS with MPC7/8/9 or PTX-FPC3 (FPC-P1, FPC-P2) installed and PTX1K: 15.1F versions prior to 15.1F6-S10; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.1X65 versions prior to 16.1X65-D46; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S4, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D70, 17.2X75-D90; 17.3 versions prior to 17.3R1-S4, 17.3R2, 17.4 versions prior to 17.4R1-S2, 17.4R2. Refer to KB25385 for more information about PFE line cards.
problem types: Denial of Service
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1F6-S10, status: affected, version: 15.1F, versionType: custom
lessThan: 15.1R4-S9, 15.1R6-S6, 15.1R7, status: affected, version: 15.1, versionType: custom
lessThan: 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7, status: affected, version: 16.1, versionType: custom
lessThan: 16.1X65-D46, status: affected, version: 16.1X65, versionType: custom
lessThan: 16.2R1-S6, 16.2R2-S5, 16.2R3, status: affected, version: 16.2, versionType: custom
lessThan: 17.1R1-S7, 17.1R2-S7, 17.1R3, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R1-S4, 17.2R2-S4, 17.2R3, status: affected, version: 17.2, versionType: custom
lessThan: 17.2X75-D70, status: affected, version: 17.2X75, versionType: custom
lessThan: 17.3R1-S4, 17.3R2, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R1-S2, 17.4R2, status: affected, version: 17.4, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.0
]
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: 12.1X46-D77, 12.3X48-D70, 14.1X53-D47, 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D140, 15.1X53-D471, 15.1X53-D59, 15.1X53-D67, 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7, 16.1X65-D46, 16.2R1-S6, 16.2R2-S5, 16.2R3, 17.1R1-S7, 17.1R2-S7, 17.1R3, 17.2R1-S4, 17.2R2-S4, 17.2R3, 17.2X75-D70, 17.3R1-S4, 17.3R2, 17.4R1-S2, 17.4R2, 18.1R1, 18.1X75-D10 and all subsequent releases.
This fix has been proactively committed into other releases that might not support these specific line card.
workarounds: No available workaround exists for this issue.