#VU88454 Improper check for unusual or exceptional conditions in Juniper Junos OS - CVE-2024-30384

Vulnerability identifier: #VU88454

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-30384

CWE-ID: CWE-754

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper check for unusual or exceptional conditions error in the Packet Forwarding Engine (PFE). A local authenticated user can cause a Denial-of-Service (Dos).

If a specific CLI command is issued, a PFE crash will occur.

This will cause traffic forwarding to be interrupted until the system self-recovers.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.4R1-S1 - 20.4R3-S9, 21.2R1-S1 - 21.2R3-S6, 21.4R1-S1 - 21.4R3-S5

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External links
https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-EX4300-Series-If-a-specific-CLI-command-is-issued-PFE-crashes-will-occur-CVE-2024-30384

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.