QID 44127

QID 44127: Juniper Network Operating System (Junos OS Evolved) Packets not destined to the Router can reach the Routing-Engine (JSA73160)

Juniper Junos is the network operating system used in Juniper Networks hardware systems.

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system. If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this.

This issue affects Juniper Networks Junos OS Evolved: 21.3-EVO versions prior to 21.3R3-S5-EVO; 21.4-EVO versions prior to 21.4R3-S4-EVO; 22.1-EVO version 22.1R1-EVO and later; 22.2-EVO version 22.2R1-EVO and later; 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; 22.4-EVO versions prior to 22.4R3-EVO. This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.

Successful exploitation of this vulnerability can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 4.8 severity.
    • Solution
    Vendor has released patch addressing the vulnerabilities, for more information please refer JSA73160

    Vendor References

    CVEs related to QID 44127

    CVE-2023-44195 |
    Software Advisories
    Advisory ID Software Component Link
    JSA73160 URL Logo supportportal.juniper.net/s/article/2023-10-Security-Bulletin-Junos-OS-Evolved-Packets-which-are-not-destined-to-the-router-can-reach-the-RE-CVE-2023-44195?language=en_US
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