Improper restriction of communication channel to intended endpoints in Juniper Junos OS Evolved

1) Improper restriction of communication channel to intended endpoints

EUVDB-ID: #VU82300

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-44196

CWE-ID: CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints

Exploit availability: No

Description

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

The vulnerability exists due to improper restriction of communication channel to intended endpoints in the NetworkStack agent daemon (nsagentd). A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.3-EVO - 22.4R2-S2-EVO

CPE2.3

• cpe:2.3:o:juniper_networks:junos_os_evolved:22.4R2-S1-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:22.4R2-S2-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:22.3R2-S1-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:21.4R3-S3-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:21.3R3-S4-EVO:*:*:*:*:*:*:*

External links

http://supportportal.juniper.net/JSA73162

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.