PT-2024-5061 · Juniper Networks · Ex4100+5

Published 2024-04-10 · Updated 2026-01-23 · CVE-2024-30388

Positive Technologies (AI Summary)

CVSS v4.0

7.1

High

Base vector

AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions: Junos OS versions 20.4R3-S4 through 20.4R3-S8 Junos OS versions 21.2R3-S2 through 21.2R3-S6 Junos OS versions 21.4R2 through 21.4R3-S4 Junos OS versions 22.1R2 through 22.1R3-S3 Junos OS versions prior to 22.2R3-S1 Junos OS versions prior to 22.3R2-S2, 22.3R3 Junos OS versions prior to 22.4R2-S1, 22.4R3

Description: An Improper Isolation or Compartmentalization vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on QFX5000 Series and EX Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). If a specific malformed LACP packet is received by a QFX5000 Series, or an EX4400, EX4100 or EX4650 Series device, an LACP flap will occur resulting in traffic loss.

Recommendations: For Junos OS versions 20.4R3-S4 through 20.4R3-S8, update to version 20.4R3-S8 or later. For Junos OS versions 21.2R3-S2 through 21.2R3-S6, update to version 21.2R3-S6 or later. For Junos OS versions 21.4R2 through 21.4R3-S4, update to version 21.4R3-S4 or later. For Junos OS versions 22.1R2 through 22.1R3-S3, update to version 22.1R3-S3 or later. For Junos OS versions prior to 22.2R3-S1, update to version 22.2R3-S1 or later. For Junos OS versions prior to 22.3R2-S2, 22.3R3, update to version 22.3R2-S2, 22.3R3 or later. For Junos OS versions prior to 22.4R2-S1, 22.4R3, update to version 22.4R2-S1, 22.4R3 or later.

Fix

DoS

Weakness Enumeration

CWE-653

Related Identifiers

BDU:2024-05588

CVE-2024-30388

Affected Products

E-Series

Ex4100

Ex4400

Ex4650

Junos

Qfx5000 Series

References · 8

• https://osv.dev/vulnerability/CVE-2024-30388 · Vendor Advisory
• https://first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-05588 · Security Note
• http://supportportal.juniper.net/JSA79089 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-30388 · Security Note
• https://twitter.com/VulmonFeeds/status/1778860379377922452 · Twitter Post
• https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-QFX5000-Series-and-EX-Series-Specific-malformed-LACP-packets-will-cause-flaps-CVE-2024-30388?language=en_US · Note
• https://t.me/cveNotify/149701 · Telegram Post