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CVE-2024-21618— Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes

CVSS 6.5 · Medium EPSS 0.12% · P31
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I. Basic Information for CVE-2024-21618

Vulnerability Information
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Vulnerability Title
Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes
Source: NVD (National Vulnerability Database)
Vulnerability Description
An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause Denial of Service (DoS). On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a malformed LLDP packet is received, l2cpd crashes and restarts. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected. This issue affects: Junos OS: * from 21.4 before 21.4R3-S4,  * from 22.1 before 22.1R3-S4,  * from 22.2 before 22.2R3-S2,  * from 22.3 before 22.3R2-S2, 22.3R3-S1,  * from 22.4 before 22.4R3,  * from 23.2 before 23.2R2. Junos OS Evolved: * from 21.4-EVO before 21.4R3-S5-EVO,  * from 22.1-EVO before 22.1R3-S4-EVO,  * from 22.2-EVO before 22.2R3-S2-EVO,  * from 22.3-EVO before 22.3R2-S2-EVO, 22.3R3-S1-EVO,  * from 22.4-EVO before 22.4R3-EVO,  * from 23.2-EVO before 23.2R2-EVO. This issue does not affect: * Junos OS versions prior to 21.4R1; * Junos OS Evolved versions prior to 21.4R1-EVO.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在缓冲区结束位置之后访问内存
Source: NVD (National Vulnerability Database)
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 21.4 到 21.4R3-S4、22.1 到 22.1R3-S4、22.2 到 22.2R3-S2、22.3 到 22.3R2-S2、22.4 到 22.4R3版本存在安全漏洞，该漏洞源于Layer-2 Control Protocols Daemon (
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

VendorProductAffected VersionsCPESubscribe
Juniper NetworksJunos OS 21.4 ~ 21.4R3-S4 -
Juniper NetworksJunos OS Evolved 21.4-EVO ~ 21.4R3-S5-EVO -

II. Public POCs for CVE-2024-21618

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III. Intelligence Information for CVE-2024-21618

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

CVE-2024-303818.4 HIGHParagon Active Assurance: probe_serviced exposes internal objects to local users
CVE-2024-303987.5 HIGHJunos OS: SRX4600 Series - A high amount of specific traffic causes packet drops and an ev
CVE-2024-215987.5 HIGHJunos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to
CVE-2024-303977.5 HIGHJunos OS: An invalid certificate causes a Denial of Service in the Internet Key Exchange (
CVE-2024-303827.5 HIGHJunos OS and Junos OS Evolved: RPD crash when CoS-based forwarding (CBF) policy is configu
CVE-2024-303927.5 HIGHJunos OS: MX Series with SPC3 and MS-MPC/-MIC: When URL filtering is enabled and a specifi
CVE-2024-303947.5 HIGHJunos OS and Junos OS Evolved: A specific EVPN type-5 route causes rpd crash
CVE-2024-303957.5 HIGHJunos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to
CVE-2024-304057.5 HIGHJunos OS: SRX 5000 Series with SPC2: Processing of specific crafted packets when ALG is en
CVE-2024-304036.5 MEDIUMJunos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashe
CVE-2024-303876.5 MEDIUMJunos OS: ACX5448 & ACX710: Due to interface flaps the PFE process can crash
CVE-2024-303886.5 MEDIUMJunos OS: QFX5000 Series and EX Series: Specific malformed LACP packets will cause flaps
CVE-2024-216096.5 MEDIUMJunos OS: MX Series with SPC3, and SRX Series: If specific IPsec parameters are negotiated
CVE-2024-216056.5 MEDIUMJunos OS: SRX 300 Series: Specific link local traffic causes a control plane overload
CVE-2024-215936.5 MEDIUMJunos OS: MX Series with MPC10, MPC11, LC9600, and MX304: A specific MPLS packet will caus
CVE-2024-304015.9 MEDIUMJunos OS: MX Series and EX9200-15C: Stack-based buffer overflow in aftman
CVE-2024-304025.9 MEDIUMJunos OS and Junos OS Evolved: The l2ald crashes on receiving telemetry messages from a sp
CVE-2024-304105.8 MEDIUMJunos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.
CVE-2024-303895.8 MEDIUMJunos OS: EX4300 Series: Firewall filter not blocking egress traffic
CVE-2024-304065.5 MEDIUMJunos 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-788

V. Comments for CVE-2024-21618

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