CVE-2023-36844

A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series 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.
This issue affects Juniper Networks Junos OS on EX Series:



  *  All versions prior to 20.4R3-S9;
  *  21.1 versions 21.1R1 and later;
  *  21.2 versions prior to 21.2R3-S7;
  *  21.3 versions 

prior to 

 21.3R3-S5;
  *  21.4 versions 

prior to 

21.4R3-S5;
  *  22.1 versions 

prior to 

22.1R3-S4;
  *  22.2 versions 

prior to 

22.2R3-S2;
  *  22.3 versions 

prior to 22.3R3-S1;
  *  22.4 versions 

prior to 

22.4R2-S2, 22.4R3;
  *  23.2 versions prior to 

23.2R1-S1, 23.2R2.