CVEvulnerability

CVE-2023-44189

5.4 MEDIUM Published 2023-10-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-10-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Weaknesses
CWE-346

Description

An Origin Validation vulnerability in MAC address validation of Juniper Networks Junos OS Evolved on PTX10003 Series allows a network-adjacent attacker to bypass MAC address checking, allowing MAC addresses not intended to reach the adjacent LAN to be forwarded to the downstream network. Due to this issue, the router will start forwarding traffic if a valid route is present in forwarding-table, causing a loop and congestion in the downstream layer-2 domain connected to the device. This issue affects Juniper Networks Junos OS Evolved on PTX10003 Series: * All versions prior to 21.4R3-S4-EVO; * 22.1 versions prior to 22.1R3-S3-EVO; * 22.2 version 22.2R1-EVO and later versions; * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO; * 23.2 versions prior to 23.2R2-EVO.

Affected configurations

• juniper junos os evolved (< 21.4) • juniper junos os evolved 21.4 • juniper junos os evolved 22.1 • juniper junos os evolved 22.2 • juniper junos os evolved 22.3 • juniper junos os evolved 22.4 • juniper junos os evolved 23.2

Related

Weakness · CWE (1)

  • CWE-346 Origin Validation Error weakness

References