CVE-2023-36847Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files
A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series 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. This issue affects Juniper Networks Junos OS on EX Series: * All versions prior to 20.4R3-S8; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S1; * 22.3 versions prior to 22.3R2-S2, 22.3R3; * 22.4 versions prior to 22.4R2-S1, 22.4R3.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 5.3 | MEDIUM | 3.1juniper (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
CISA required action
⚡ Known exploited · remediation due Nov 17, 2023
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2023-36847
- Status
- Analyzed
- Assigner (CNA)
- juniper
- Published
- Aug 17, 2023
- Last modified
- 2026-06-17 06:07 UTC
- Weaknesses
- CWE-306 · Missing Authentication for Critical Function
Affected Products
As published by the CNA in the CVE record.
Juniper NetworksJunos OS9 version ranges
- before 20.4R3-S8
- 21.1 before 21.1*
- 21.2 before 21.2R3-S6
- 21.3 before 21.3R3-S5
- 21.4 before 21.4R3-S4
- 22.1 before 22.1R3-S3
- 22.2 before 22.2R3-S1
- 22.3 before 22.3R2-S2, 22.3R3
- 22.4 before 22.4R2-S1, 22.4R3