Vulnerability in Juniper Junos OS Evolved
CVE-2023-44190
An Origin Validation vulnerability in MAC address validation of Juniper Networks Junos OS Evolved on PTX10001, PTX10004, PTX10008, and PTX10016 devices 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 PTX10001, PTX10004, PTX10008, and PTX10016: * All versions prior to 21.4R3-S5-EVO; * 22.1 versions prior to 22.1R3-S4-EVO; * 22.2 versions 22.2R1-EVO and later; * 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 23.2R1-S1-EVO, 23.2R2-EVO.
EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L.
Affected products
- Juniper Junos_os_evolved — versions 21.4, 22.1, 22.2
- Juniper Ptx10001
- Juniper Ptx10001-36mr
- Juniper Ptx10004
- Juniper Ptx10008
- Juniper Ptx10016
- Juniper Networks Junos Os Evolved — versions 0, 22.1, 22.2R1-EVO
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-44190?
- CVE-2023-44190 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under Origin Validation Error. CVSS score: 6.1/10. Published 2023-10-11.
- How severe is CVE-2023-44190?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2023-44190 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.