Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Juniper Networks / Junos OS Evolved | affected 0 before 21.4R3-S4-EVO; affected 22.1 before 22.1R3-S3-EVO; affected 22.2R1-EVO before 22.2*-EVO; affected 22.3 before 22.3R2-S2-EVO, 22.3R3-S1-EVO; affected 22.4 before 22.4R2-S1-EVO, 22.4R3-EVO; affected 23.2 before 23.2R2-EVO |
CWE
CWE-346
References
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.