Vulnerability identifier: #VU82517

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-44178

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

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

Vendor: Juniper Networks, Inc.

Description

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

The vulnerability exists due to a boundary error when handling CLI commands. A local user can can trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 22.2-EVO - 22.2R3-EVO, 22.3R1-EVO - 22.3R2-S2-EVO, 22.4R1-EVO - 22.4R1-S2-EVO, 22.1-EVO - 22.1R3-S2-EVO, 21.4R1-EVO - 21.4R3-S3-EVO, 21.3-EVO - 21.3R3-S4-EVO, 21.2-EVO - 21.2R3-S5-EVO, 20.4 - 20.4R3-S7-EVO, 20.4R2-S2-EVO

Juniper Junos OS: 21.3R1 - 21.3R3-S4, 21.2R1 - 21.2R3-S5, 20.4 - 20.4R3-S7, 22.3R1 - 22.3R2-S2, 22.2R1 - 22.2R3, 22.1R1 - 22.1R3-S2

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External links
http://supportportal.juniper.net/s/article/2023-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-Vulnerabilities-in-CLI-command

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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.