CVE-2021-0299: An Improper Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks…

PriorityP341high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.98%

58.5th percentile

An Improper Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks Junos OS results in a kernel crash, causing the device to restart, leading to a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems with IPv6 configured. Devices with only IPv4 configured are not vulnerable to this issue. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos_os	—	—
juniper_networks	junos_os	>= 19.4 < 19.4R3	19.4R3
juniper_networks	junos_os	>= 20.1 < 20.1R2	20.1R2
juniper_networks	junos_os	>= 20.2 < 20.2R1-S1, 20.2R2	20.2R1-S1, 20.2R2

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvdv2.07.1HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C

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