CVE-2024-30389CWE-696

Junos OS: EX4300 Series: Firewall filter not blocking egress traffic

Medium · published April 12, 2024

CVSS v4.0
6.9
EPSS
0%
Percentile
29.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
EPSS
0.00363 · 29.0th percentile
Weakness
CWE-696 · Incorrect Behavior Order
Published
2024-04-12T15:24Z
EPSS history
Timeline
  • 12 APR 15:24Z
    Junos OS: EX4300 Series: Firewall filter not blocking egress traffic
    cvelistv5