title: Junos OS: A malformed IPv4 packet received by Junos in an NG-mVPN scenario may cause the routing protocol daemon (rpd) process to core
description: An unexpected status return value weakness in the Next-Generation Multicast VPN (NG-mVPN) service of Juniper Networks Junos OS allows attacker to cause a Denial of Service (DoS) condition and core the routing protocol daemon (rpd) process when a specific malformed IPv4 packet is received by the device running BGP. This malformed packet can be crafted and sent to a victim device including when forwarded directly through a device receiving such a malformed packet, but not if the malformed packet is first de-encapsulated from an encapsulated format by a receiving device. Continued receipt of the malformed packet will result in a sustained Denial of Service condition. This issue affects: Juniper Networks Junos OS 15.1 versions prior to 15.1F6-S12, 15.1R7-S2; 15.1X49 versions prior to 15.1X49-D150 on SRX Series; 15.1X53 versions prior to 15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590; 16.1 versions prior to 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S9, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3; 17.3 versions prior to 17.3R2-S4, 17.3R3.
problem types: CWE-394 Unexpected Status Code or Return Value
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1F6-S12, 15.1R7-S2, status: affected, version: 15.1, versionType: custom
lessThan: 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2, status: affected, version: 16.1, versionType: custom
lessThan: 16.2R2-S7, status: affected, version: 16.2, versionType: custom
lessThan: 17.1R2-S9, 17.1R3, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R1-S7, 17.2R2-S6, 17.2R3, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R2-S4, 17.3R3, status: affected, version: 17.3, versionType: custom
lessThan: 15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, status: affected, version: 15.1X53, versionType: custom
}
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X49-D150, status: affected, version: 15.1X49, 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: 15.1F6-S12, 15.1R7-S2, 15.1X49-D150, 15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2, 16.2R2-S7, 17.1R2-S9, 17.1R3, 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.3R2-S4, 17.3R3, 17.4R1, and all subsequent releases.
workarounds: Discontinue use of BGP services if not needed.  Otherwise, there are no viable workarounds for this issue.