Vulnerability in Juniper Ex4300
CVE-2024-30389
An Incorrect Behavior Order vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series allows an unauthenticated, network-based attacker to cause an integrity impact to networks downstream of the vulnerable device. When an output firewall filter is applied to an interface it doesn't recognize matching packets but permits any traffic. This issue affects Junos OS 21.4 releases from 21.4R1 earlier than 21.4R3-S6. This issue does not affect Junos OS releases earlier than 21.4R1.
EPSS: 0.004 (29.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
- sirt@juniper.net (technical-description, Issue Tracking)
Frequently asked questions
- What is CVE-2024-30389?
- CVE-2024-30389 is a medium-severity vulnerability in Juniper Ex4300, classified under CWE-696. CVSS score: 5.8/10. Published 2024-04-12.
- How severe is CVE-2024-30389?
- Medium severity. CVSS v3 base score is 5.8 out of 10.
- Is CVE-2024-30389 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.