CVE-2024-21595

published 2024-01-12

CVE-2024-21595: An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a…

Priority P3 45 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).

If an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device.

This issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.

This issue affects:

Juniper Networks Junos OS

* 21.4R3 versions earlier than 21.4R3-S4;
* 22.1R3 versions earlier than 22.1R3-S3;
* 22.2R2 versions earlier than 22.2R3-S1;
* 22.3 versions earlier than 22.3R2-S2, 22.3R3;
* 22.4 versions earlier than 22.4R2;
* 23.1 versions earlier than 23.1R2.

Affected

14 ranges

Vendor	Product	Version range	Fixed in
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos_os	—	—
juniper	qfx_series	—	—
juniper_networks	junos_os	>= 21.4R3 < 21.4R3-S4	21.4R3-S4
juniper_networks	junos_os	>= 22.1R3 < 22.1R3-S3	22.1R3-S3
juniper_networks	junos_os	>= 22.2R2 < 22.2R3-S1	22.2R3-S1
juniper_networks	junos_os	>= 22.3 < 22.3R2-S2, 22.3R3	22.3R2-S2, 22.3R3
juniper_networks	junos_os	>= 22.4 < 22.4R2	22.4R2
juniper_networks	junos_os	>= 23.1 < 23.1R2	23.1R2

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CWE-1286