How serious is CVE-2023-36851?

This vulnerability has a CVSS score of 5.3 out of 10, classified as MEDIUM severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2023-36851?

Yes, proof-of-concept exploit code for CVE-2023-36851 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2023-36851?

CVE-2023-36851 affects juniper junos. Check the full CVE details for specific version information.

How do I fix CVE-2023-36851?

To remediate CVE-2023-36851, check for security patches from juniper. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2023-36851

Medium

|5.3

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can exploit a flaw in Juniper's Junos OS to upload and download files without needing to log in, potentially compromising the system's integrity and confidentiality. This vulnerability affects specific versions of the software, allowing unauthorized access if the attacker knows how to make a specific request.

Technical 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 and download arbitrary files via J-Web, leading to a loss of integrity or confidentiality, which may allow chaining to other vulnerabilities. This issue affects Juniper Networks Junos OS on SRX Series: * 21.2 versions prior to 21.2R3-S8; * 21.4 versions prior to 21.4R3-S6; * 22.1 versions prior to 22.1R3-S5; * 22.2 versions prior to 22.2R3-S3; * 22.3 versions prior to 22.3R3-S2; * 22.4 versions prior to 22,4R2-S2, 22.4R3; * 23.2 versions prior to 23.2R1-S2, 23.2R2.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactNone

Integrity ImpactLow

Availability ImpactNone

ScopeUnchanged

Vector String

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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$724($500-$1K)

Vendor Response

Grade FPatched in 882 days

Quick Information

Published

Sep 27, 2023

over 2 years ago

Last Modified

Feb 26, 2026

about 1 month ago

Vendor

juniper

Product

junos

Related Vulnerabilities

CVE-2023-36847Medium

An attacker can upload arbitrary files to the Juniper Networks Junos OS on EX Series devices without needing to log in, which can compromise the integrity of the file system. This vulnerability affects multiple versions of the software, so if you're using an outdated version, you should update immediately to prevent exploitation.

CVE-2023-36846Medium

This vulnerability allows an attacker to upload unauthorized files to the Juniper Networks Junos OS on SRX Series devices without needing to log in, which can compromise the integrity of the file system. It affects multiple versions of the software, so if you're running an outdated version, you could be at risk.