#VU88439 Improper input validation in Junos OS Evolved - CVE-2024-21590

Vulnerability identifier: #VU88439

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:HCVSS/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-21590

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

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

Vendor: Juniper Networks, Inc.

Description

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

The vulnerability exists due to improper input validation error in Juniper Tunnel Driver (jtd) and ICMP module. A remote non-authenticated attacker can send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.2-EVO - 21.2R3-S7-EVO, 21.4R1-EVO - 21.4R3-S5-EVO, 22.2-EVO - 22.2R3-S3-EVO, 22.3R1-EVO - 22.3R3-S2-EVO, 22.4R1-EVO - 22.4R2-S2-EVO, 23.2R1-EVO - 23.2R1-S2-EVO

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External links
https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-Evolved-Packets-which-are-not-destined-to-the-device-can-reach-the-RE-CVE-2024-21590

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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