Juniper Networks Junos OS Evolved prior 22.3R2-EVO/22.4R1-S1-EVO/22.4R2-EVO CLI os command injection

Summaryinfo

A vulnerability described as critical has been identified in Juniper Networks Junos OS Evolved. This impacts an unknown function of the component CLI. Executing a manipulation can lead to os command injection. This vulnerability is tracked as CVE-2024-39522. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Juniper Networks Junos OS Evolved and classified as critical. This vulnerability affects an unknown code block of the component CLI. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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: * 22.3-EVO versions before 22.3R2-EVO, * 22.4-EVO versions before 22.4R1-S1-EVO, 22.4R2-EVO.

The advisory is shared for download at supportportal.juniper.net. This vulnerability was named CVE-2024-39522 since 06/25/2024. The exploitation appears to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/23/2024). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 22.3R2-EVO, 22.4R1-S1-EVO or 22.4R2-EVO eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Juniper Networks

Name

• Junos OS Evolved

License

• commercial

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