CVE-2023-36851 — Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
CVE-2023-36851: Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Juniper |
| Product | Junos OS |
| Date added | 2023-11-13 |
| Due date | 2023-11-17 |
| Ransomware campaign use | Unknown |
Description
Juniper Junos OS on SRX 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 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.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://supportportal.juniper.net/s/article/2023-08-Out-of-Cycle-Security-Bulletin-Junos-OS-SRX-Series-and-EX-Series-Multiple-vulnerabilities-in-J-Web-can-be-combined-to-allow-a-preAuth-Remote-Code-Execution?language=en_US ; https://nvd.nist.gov/vuln/detail/CVE-2023-36851
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-36851
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog