high
8.5
CWE
78
Advisory Published
Updated

CVE-2024-39523: Junos OS Evolved: CLI parameter processing issue allows privilege escalation

First published: Thu Jul 11 2024(Updated: )

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system. The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level. This issue affects Junos OS Evolved:  * All versions before 20.4R3-S7-EVO, * 21.2-EVO versions before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.1-EVO versions before 22.1R3-S6-EVO,  * 22.2-EVO versions before 22.2R3-EVO, * 22.3-EVO versions before 22.3R2-EVO, * 22.4-EVO versions before 22.4R2-EVO.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper Networks Junos OS Evolved<20.4
Juniper Networks Junos OS Evolved=20.4
Juniper Networks Junos OS Evolved=20.4-r1
Juniper Networks Junos OS Evolved=20.4-r1-s1
Juniper Networks Junos OS Evolved=20.4-r1-s2
Juniper Networks Junos OS Evolved=20.4-r2
Juniper Networks Junos OS Evolved=20.4-r2-s1
Juniper Networks Junos OS Evolved=20.4-r2-s2
Juniper Networks Junos OS Evolved=20.4-r2-s3
Juniper Networks Junos OS Evolved=20.4-r3
Juniper Networks Junos OS Evolved=20.4-r3-s1
Juniper Networks Junos OS Evolved=20.4-r3-s2
Juniper Networks Junos OS Evolved=20.4-r3-s3
Juniper Networks Junos OS Evolved=20.4-r3-s4
Juniper Networks Junos OS Evolved=20.4-r3-s5
Juniper Networks Junos OS Evolved=20.4-r3-s6
Juniper Networks Junos OS Evolved=21.2
Juniper Networks Junos OS Evolved=21.2-r1
Juniper Networks Junos OS Evolved=21.2-r1-s1
Juniper Networks Junos OS Evolved=21.2-r1-s2
Juniper Networks Junos OS Evolved=21.2-r2
Juniper Networks Junos OS Evolved=21.2-r2-s1
Juniper Networks Junos OS Evolved=21.2-r2-s2
Juniper Networks Junos OS Evolved=21.2-r3
Juniper Networks Junos OS Evolved=21.2-r3-s1
Juniper Networks Junos OS Evolved=21.2-r3-s2
Juniper Networks Junos OS Evolved=21.2-r3-s3
Juniper Networks Junos OS Evolved=21.2-r3-s4
Juniper Networks Junos OS Evolved=21.2-r3-s5
Juniper Networks Junos OS Evolved=21.2-r3-s6
Juniper Networks Junos OS Evolved=21.2-r3-s7
Juniper Networks Junos OS Evolved=21.4
Juniper Networks Junos OS Evolved=21.4-r1
Juniper Networks Junos OS Evolved=21.4-r1-s1
Juniper Networks Junos OS Evolved=21.4-r1-s2
Juniper Networks Junos OS Evolved=21.4-r2
Juniper Networks Junos OS Evolved=21.4-r2-s1
Juniper Networks Junos OS Evolved=21.4-r2-s2
Juniper Networks Junos OS Evolved=21.4-r3
Juniper Networks Junos OS Evolved=21.4-r3-s1
Juniper Networks Junos OS Evolved=21.4-r3-s2
Juniper Networks Junos OS Evolved=21.4-r3-s3
Juniper Networks Junos OS Evolved=21.4-r3-s4
Juniper Networks Junos OS Evolved=21.4-r3-s5
Juniper Networks Junos OS Evolved=21.4-r3-s6
Juniper Networks Junos OS Evolved=22.2
Juniper Networks Junos OS Evolved=22.2-r1
Juniper Networks Junos OS Evolved=22.2-r1-s1
Juniper Networks Junos OS Evolved=22.2-r2
Juniper Networks Junos OS Evolved=22.2-r2-s2
Juniper Networks Junos OS Evolved=22.3
Juniper Networks Junos OS Evolved=22.3-r1
Juniper Networks Junos OS Evolved=22.3-r1-s1
Juniper Networks Junos OS Evolved=22.3-r1-s2
Juniper Networks Junos OS Evolved=22.4
Juniper Networks Junos OS Evolved=22.4-r1
Juniper Networks Junos OS Evolved=22.4-r1-s1
Juniper Networks Junos OS Evolved=22.4-r1-s2

Remedy

The following software releases have been updated to resolve this specific issue: 20.4R3-S7-EVO, 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.1R3-S6-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-39523?

    CVE-2024-39523 has a severity level that allows privilege escalation, leading to full system compromise.

  • Who is affected by CVE-2024-39523?

    CVE-2024-39523 affects local, authenticated users on Juniper Networks Junos OS Evolved versions up to 20.4.

  • How can I mitigate CVE-2024-39523?

    To mitigate CVE-2024-39523, apply the latest security patches provided by Juniper Networks.

  • What type of vulnerability is CVE-2024-39523?

    CVE-2024-39523 is categorized as an improper neutralization of special elements vulnerability.

  • What potential impact does CVE-2024-39523 have on my system?

    Exploitation of CVE-2024-39523 may lead to unauthorized access with root privileges, compromising system security.

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