CVE-2023-36851 Information

Description

A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker to cause limited impact to the file system integrity.

With a specific request to

webauth_operation.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.

This issue affects Juniper Networks Junos OS on SRX Series:

22.4 versions prior to 224R2-S2 22.4R3;
23.2 versions prior to 23.2R2.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Reference

https://supportportal.juniper.net/JSA72300

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3