CriticalCVECISA — Known Exploited Vulnerabilities· 13 Nov 2023

CVE-2023-36847 — Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

Severity: Critical · Kind: Vulnerability

Plain-English summary on the way

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From the source

Juniper Junos OS. Juniper Junos OS on EX 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 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. Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vulnerability facts

CVE: CVE-2023-36847
On CISA KEV since: 2023-11-13
Ransomware use: Unknown

Read the original advisory →← All threat intel

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.