CVE-2023-44195 : What You Need to Know
Learn about CVE-2023-44195, an Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved, allowing unauthorized access and potential Denial-of-Service impact.
This article provides detailed information about CVE-2023-44195, a vulnerability in Juniper Networks Junos OS Evolved that allows an unauthenticated attacker to impact system availability and potentially lead to a Denial-of-Service (DoS) scenario.
Understanding CVE-2023-44195
CVE-2023-44195 is an Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved. It can be exploited by an unauthenticated network-based attacker to cause limited impact to system availability.
What is CVE-2023-44195?
This vulnerability allows specific packets to reach the Routing-Engine (RE) despite firewall filters, potentially leading to a DoS scenario and unauthorized access.
The Impact of CVE-2023-44195
The vulnerability can result in increased resource consumption, system unavailability, and unauthorized access attempts. It affects several versions of Junos OS Evolved.
Technical Details of CVE-2023-44195
The vulnerability impacts Juniper Networks Junos OS Evolved versions including 21.3-EVO, 21.4-EVO, 22.1-EVO, 22.2-EVO, 22.3-EVO, and 22.4-EVO. It does not affect versions prior to 21.3R1-EVO.
Vulnerability Description
An attacker can exploit this issue to bypass firewall filters and cause a limited DoS effect, potentially leading to unauthorized access.
Affected Systems and Versions
Versions of Junos OS Evolved impacted include 21.3-EVO to 22.4-EVO, excluding versions prior to 21.3R1-EVO.
Exploitation Mechanism
While no known malicious exploitation has been reported, the vulnerability could be leveraged for unauthorized access and resource consumption.
Mitigation and Prevention
Immediate steps involve applying software updates provided by Juniper Networks to address the vulnerability. Long-term security practices should include regular patching and updates.
Immediate Steps to Take
Update affected Junos OS Evolved versions to the patched releases mentioned by the vendor.
Long-Term Security Practices
Regularly update software and monitor for security advisories from Juniper Networks.
Patching and Updates
Juniper Networks has released updated versions of Junos OS Evolved to address this vulnerability.