Disclosure summary
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.
CISA remediation guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Original records & references
PUBLISHED 2023-11-13T00:00:00-05:00
MODIFIED 2023-11-13T00:00:00-05:00
INGESTED 2026-10-06T11:42:58-04:00