Improper handling of exceptional conditions in Junos OS and Junos OS Evolved - CVE-2024-30380

Vulnerability identifier: #VU88447

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-30380

CWE-ID: CWE-755

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions error. A remote non-authenticated attacker can cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV.

Junos OS
Junos OS Evolved

Install updates from vendor's website.

Junos OS - addressed in versions 20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S4, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1
Junos OS Evolved - addressed in versions 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S2-EVO, 22.4R3-EVO, 23.2R1-S1-EVO, 23.2R2-EVO, 23.4R1-EVO

• https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-l2cpd-crash-upon-receipt-of-a-specific-TLV-CVE-2024-30380

• Improper handling of exceptional conditions in Junos OS Evolved and Juniper Junos OS