title: Junos OS: Kernel crash after processing specific incoming packet to the out of band management interface (CVE-2019-0011)
description: The Junos OS kernel crashes after processing a specific incoming packet to the out of band management interface (such as fxp0, me0, em0, vme0) destined for another address. By continuously sending this type of packet, an attacker can repeatedly crash the kernel causing a sustained Denial of Service. Affected releases are Juniper Networks Junos OS: 17.2 versions prior to 17.2R1-S7, 17.2R3; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R1-S4, 17.4R2; 17.2X75 versions prior to 17.2X75-D110; 18.1 versions prior to 18.1R2.
problem types: DoS
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 17.2R1-S7, 17.2R3, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R3-S3, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R1-S4, 17.4R2, status: affected, version: 17.4, versionType: custom
lessThan: 17.2X75-D110, status: affected, version: 17.2X75, versionType: custom
lessThan: 18.1R2, status: affected, version: 18.1, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:A/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: Junos OS 17.2R1-S7, 17.2R3, 17.2X75-D110, 17.3R3-S3, 17.4R1-S4, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases.
workarounds: Apply a firewall filter on the management interface which permits only the necessary traffic on management interface to the device's local address, such as SNMP, SSH, or other management traffic and drops everything else.