CVE-2023-44189: Junos OS Evolved: PTX10003 Series: MAC address validation bypass vulnerability
First published: Wed Oct 11 2023(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Networks Junos OS | <21.4 | |
| Juniper Networks Junos OS | =21.4 | |
| Juniper Networks Junos OS | =21.4-r1 | |
| Juniper Networks Junos OS | =21.4-r1-s1 | |
| Juniper Networks Junos OS | =21.4-r1-s2 | |
| Juniper Networks Junos OS | =21.4-r2 | |
| Juniper Networks Junos OS | =21.4-r2-s1 | |
| Juniper Networks Junos OS | =21.4-r2-s2 | |
| Juniper Networks Junos OS | =21.4-r3 | |
| Juniper Networks Junos OS | =21.4-r3-s1 | |
| Juniper Networks Junos OS | =21.4-r3-s2 | |
| Juniper Networks Junos OS | =21.4-r3-s3 | |
| Juniper Networks Junos OS | =22.1-r1 | |
| Juniper Networks Junos OS | =22.1-r1-s1 | |
| Juniper Networks Junos OS | =22.1-r1-s2 | |
| Juniper Networks Junos OS | =22.1-r2 | |
| Juniper Networks Junos OS | =22.1-r2-s1 | |
| Juniper Networks Junos OS | =22.1-r3 | |
| Juniper Networks Junos OS | =22.1-r3-s1 | |
| Juniper Networks Junos OS | =22.1-r3-s2 | |
| Juniper Networks Junos OS | =22.2-r1 | |
| Juniper Networks Junos OS | =22.2-r1-s1 | |
| Juniper Networks Junos OS | =22.2-r2 | |
| Juniper Networks Junos OS | =22.2-r2-s1 | |
| Juniper Networks Junos OS | =22.2-r2-s2 | |
| Juniper Networks Junos OS | =22.2-r3 | |
| Juniper Networks Junos OS | =22.2-r3-s1 | |
| Juniper Networks Junos OS | =22.3-r1 | |
| Juniper Networks Junos OS | =22.3-r1-s1 | |
| Juniper Networks Junos OS | =22.3-r1-s2 | |
| Juniper Networks Junos OS | =22.3-r2 | |
| Juniper Networks Junos OS | =22.3-r2-s1 | |
| Juniper Networks Junos OS | =22.4-r1 | |
| Juniper Networks Junos OS | =22.4-r1-s1 | |
| Juniper Networks Junos OS | =22.4-r1-s2 | |
| Juniper Networks Junos OS | =22.4-r2 | |
| Juniper Networks Junos OS | =23.2-r1 | |
| Juniper Networks Junos OS | =23.2-r1-s1 | |
| juniper ptx10003 | ||
| juniper ptx10003 160c | ||
| juniper ptx10003 80c | ||
| juniper ptx10003 81cd |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.3R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2023-44189.
What is the affected software of this vulnerability?
The affected software is Juniper Junos Os Evolved versions up to and including 21.4.
What is the severity of CVE-2023-44189?
The severity of CVE-2023-44189 is medium with a CVSS score of 5.4.
How does CVE-2023-44189 impact the network?
CVE-2023-44189 allows a network-adjacent attacker to bypass MAC address checking and forward MAC addresses not intended to reach the adjacent LAN to the downstream network.
Is the Juniper Ptx10003 affected by CVE-2023-44189?
No, the Juniper Ptx10003 series is not affected by CVE-2023-44189.
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- canonical/juniper ptx10003
- canonical/juniper ptx10003 160c
- canonical/juniper ptx10003 80c
- canonical/juniper ptx10003 81cd