Vulnerability identifier: #VU88439

Vulnerability risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS/E:U/RL:O/RC:C]

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: 22.3R1-EVO - 22.3R3-S1-EVO, 22.3R3-S2-EVO, 22.2-EVO - 22.2R3-S3-EVO, 21.2-EVO - 21.2R3-S6-EVO, 21.2R3-S7-EVO, 21.4R1-EVO - 21.4R3-S5-EVO, 23.2R1-EVO - 23.2R1-S1-EVO, 23.2R1-S2-EVO, 22.4R1-EVO - 22.4R2-S1-EVO, 22.4R2-S2-EVO

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External links
http://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.