Improper handling of inconsistent special elements in Juniper Junos OS - CVE-2023-36843

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Main Vulnerability Database Vulnerabilities #VU82386

Improper handling of inconsistent special elements in Juniper Junos OS - CVE-2023-36843

Published: October 25, 2023


Vulnerability identifier: #VU82386
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-36843
CWE-ID:
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Juniper Junos OS
Software vendor:
Juniper Networks, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of inconsistent special elements error in the Junos Services Framework (jsf) module when handling malformed SSL traffic. A remote non-authenticated attacker can cause a crash in the Packet Forwarding Engine (pfe).

This issue only affects devices with Juniper Networks Advanced Threat Prevention (ATP) Cloud enabled with Encrypted Traffic Insights (configured via security-metadata-streaming policy).


Remediation

Install updates from vendor's website.

External links