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CVE-2024-30389— Junos OS: EX4300 Series: Firewall filter not blocking egress traffic

Quick assessment

Affected
Juniper Networks Junos OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS存在安全漏洞，该漏洞源于数据包转发引擎PFE存在安全漏洞。攻击者可利用该漏洞对下游网络设备造成影响。受影响的产品和版本：Juniper Networks Junos OS 21.4R1至21.4R3-S6之前版本。

CVSS 5.8 · Medium EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2024-30389

Vulnerability Information
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Vulnerability Title
Junos OS: EX4300 Series: Firewall filter not blocking egress traffic
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的行为次序
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS存在安全漏洞，该漏洞源于数据包转发引擎PFE存在安全漏洞。攻击者可利用该漏洞对下游网络设备造成影响。受影响的产品和版本：Juniper Networks Junos OS 21.4R1至21.4R3-S6之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks Junos OS 21.4 ~ 21.4R3-S6 -

II. Public POCs for CVE-2024-30389

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III. Intelligence Information for CVE-2024-30389

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Other References for CVE-2024-30389 (1)

Other References for CVE-2024-30389 (1)

Same Patch Batch · Juniper Networks · 2024-04-12 · 29 CVEs total

CVE-2024-30381 8.4 HIGH Paragon Active Assurance: probe_serviced exposes internal objects to local users
CVE-2024-30398 7.5 HIGH Junos OS: SRX4600 Series - A high amount of specific traffic causes packet drops and an ev
CVE-2024-21598 7.5 HIGH Junos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to
CVE-2024-30397 7.5 HIGH Junos OS: An invalid certificate causes a Denial of Service in the Internet Key Exchange (
CVE-2024-30382 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash when CoS-based forwarding (CBF) policy is configu
CVE-2024-30392 7.5 HIGH Junos OS: MX Series with SPC3 and MS-MPC/-MIC: When URL filtering is enabled and a specifi
CVE-2024-30394 7.5 HIGH Junos OS and Junos OS Evolved: A specific EVPN type-5 route causes rpd crash
CVE-2024-30395 7.5 HIGH Junos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to
CVE-2024-30405 7.5 HIGH Junos OS: SRX 5000 Series with SPC2: Processing of specific crafted packets when ALG is en
CVE-2024-30403 6.5 MEDIUM Junos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashe
CVE-2024-30387 6.5 MEDIUM Junos OS: ACX5448 & ACX710: Due to interface flaps the PFE process can crash
CVE-2024-30388 6.5 MEDIUM Junos OS: QFX5000 Series and EX Series: Specific malformed LACP packets will cause flaps
CVE-2024-21618 6.5 MEDIUM Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is receive
CVE-2024-21609 6.5 MEDIUM Junos OS: MX Series with SPC3, and SRX Series: If specific IPsec parameters are negotiated
CVE-2024-21605 6.5 MEDIUM Junos OS: SRX 300 Series: Specific link local traffic causes a control plane overload
CVE-2024-21593 6.5 MEDIUM Junos OS: MX Series with MPC10, MPC11, LC9600, and MX304: A specific MPLS packet will caus
CVE-2024-30401 5.9 MEDIUM Junos OS: MX Series and EX9200-15C: Stack-based buffer overflow in aftman
CVE-2024-30402 5.9 MEDIUM Junos OS and Junos OS Evolved: The l2ald crashes on receiving telemetry messages from a sp
CVE-2024-30410 5.8 MEDIUM Junos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.
CVE-2024-30406 5.5 MEDIUM Junos OS Evolved: ACX Series with Paragon Active Assurance Test Agent: A local high privil

Showing top 20 of 29 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-696

V. Comments for CVE-2024-30389

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