CVE-2024-30410CWE-696

Junos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.

Medium · published April 12, 2024

CVSS v4.0
6.9
EPSS
0%
Percentile
28.9
In the wild
Unconfirmed
What it is

An Incorrect Behavior Order in the routing engine (RE) of Juniper Networks Junos OS on EX4300 Series allows traffic intended to the device to reach the RE instead of being discarded when the discard term is set in loopback (lo0) interface. The intended function is that the lo0 firewall filter takes precedence over the revenue interface firewall filter.

This issue affects only IPv6 firewall filter.

This issue only affects the EX4300 switch. No other products or platforms are affected by this vulnerability.

This issue affects Juniper Networks Junos OS:

* All versions before 20.4R3-S10,

* from 21.2 before 21.2R3-S7,

* from 21.4 before 21.4R3-S6.

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 · 28.9th percentile
Weakness
CWE-696 · Incorrect Behavior Order
Published
2024-04-12T15:02Z
EPSS history
Timeline
  • 12 APR 15:02Z
    Junos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.
    cvelistv5