Juniper Junos OS EX Series PHP External Variable Modification Vulnerability

Juniper Junos OS on EX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control certain, important environment variables. Using a crafted request an attacker is able to modify certain PHP environment variables, leading to partial loss of integrity, which may allow chaining to other vulnerabilities. CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.