CVE-2024-30389

Description

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.

CVSS v3.1 Score

5.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness Type (CWE)

CWE-696 CWE-696

Affected Products

Vendor	Product	Versions
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	junos	All
juniper	ex4300	All
juniper	ex4300-24p	All
juniper	ex4300-24p-s	All
juniper	ex4300-24t	All
juniper	ex4300-24t-s	All
juniper	ex4300-32f	All
juniper	ex4300-32f-dc	All
juniper	ex4300-32f-s	All
juniper	ex4300-48mp	All
juniper	ex4300-48mp-s	All
juniper	ex4300-48p	All
juniper	ex4300-48p-s	All
juniper	ex4300-48t	All
juniper	ex4300-48t-afi	All
juniper	ex4300-48t-dc	All
juniper	ex4300-48t-dc-afi	All
juniper	ex4300-48t-s	All

References

Advisories & Patches

http://supportportal.juniper.net/JSA79185 http://supportportal.juniper.net/JSA79185

Other References

https://www.first.org/cvss/calculator/4.0#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 https://www.first.org/cvss/calculator/4.0#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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2024-30389? +

CVE-2024-30389 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-30389? +

CVE-2024-30389 affects products from juniper, specifically: ex4300, ex4300-24p, ex4300-24p-s, ex4300-24t, ex4300-24t-s, ex4300-32f, ex4300-32f-dc, ex4300-32f-s, ex4300-48mp, ex4300-48mp-s, ex4300-48p, ex4300-48p-s, ex4300-48t, ex4300-48t-afi, ex4300-48t-dc, ex4300-48t-dc-afi, ex4300-48t-s, junos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-30389? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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