CVE-2023-36847β€”Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

PUBLISHEDvulnerability record
2023-11-13 Β· last modified June 21, 2025

Metadata

CVE ID:
CVE-2023-36847
Project:
Juniper
Product:
Junos OS
Date Added:
2023-11-13
Due Date:
2023-11-17
Last Updated:
June 21, 2025

Vulnerability Name

Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

Description

Juniper Junos OS on EX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to installAppPackage.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Additional Notes

  • https://supportportal.juniper.net/s/article/2023-08-Out-of-Cycle-Security-Bulletin-Junos-OS-SRX-Series-and-EX-Series-Multiple-vulnerabilities-in-J-Web-can-be-combined-to-allow-a-preAuth-Remote-Code-Execution?language=en_US
  • https://nvd.nist.gov/vuln/detail/CVE-2023-36847

Related Weaknesses

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