title: Junos OS: The kernel will crash when certain USB devices are inserted
description: An Unexpected Status Code or Return Value vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated attacker with physical access to the device to cause a Denial of Service (DoS). When certain USB devices are connected to a USB port of the routing-engine (RE), the kernel will crash leading to a reboot of the device. The device will continue to crash as long as the USB device is connected. This issue affects Juniper Networks Junos OS: All versions prior to 19.4R3-S10; 20.2 versions prior to 20.2R3-S7; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R2, 22.2R3; 22.3 versions prior to 22.3R1-S1, 22.3R2; 22.4 versions prior to 22.4R2.
problem types: CWE-394 Unexpected Status Code or Return Value
affected:
{
vendor: Juniper Networks
product: Junos OS
versions:
version: unspecified, lessThan: 19.4R3-S10, status: affected, versionType: custom
version: 20.2, status: affected, lessThan: 20.2R3-S7, versionType: custom
version: 20.3, status: affected, lessThan: 20.3R3-S6, versionType: custom
version: 20.4, status: affected, lessThan: 20.4R3-S5, versionType: custom
version: 21.1, status: affected, lessThan: 21.1R3-S4, versionType: custom
version: 21.2, status: affected, lessThan: 21.2R3-S4, versionType: custom
version: 21.3, status: affected, lessThan: 21.3R3-S3, versionType: custom
version: 21.4, status: affected, lessThan: 21.4R3-S2, versionType: custom
version: 22.1, status: affected, lessThan: 22.1R2-S2, 22.1R3, versionType: custom
version: 22.2, status: affected, lessThan: 22.2R2, versionType: custom
version: 22.3, status: affected, lessThan: 22.3R1-S1, 22.3R2, versionType: custom
version: 22.4, status: affected, lessThan: 22.4R2, versionType: custom
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: PHYSICAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 4.6
baseSeverity: MEDIUM
]
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: 19.4R3-S10, 20.2R3-S7, 20.3R3-S6, 20.4R3-S5, 21.1R3-S4, 21.2R3-S4, 21.3R3-S3, 21.4R3-S2, 22.1R2-S2, 22.1R3, 22.2R2, 22.3R1-S1, 22.3R2, 22.4R2, 23.1R1, and all subsequent releases.
workarounds: To reduce the risk of exploitation utilize common security BCPs to limit physical access to the devices..