CVE-2023-44177 : Vulnerability Insights and Analysis

A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos and Junos EVO allows a low privileged attacker to execute specific CLI commands, leading to Denial of Service. This article provides details on the impact, technical aspects, mitigation steps, and more.

Understanding CVE-2023-44177

This section delves into the details of CVE-2023-44177, outlining the vulnerability's nature and its implications.

What is CVE-2023-44177?

The CVE-2023-44177 vulnerability involves a Stack-based Buffer Overflow in Juniper Networks' Junos and Junos EVO CLI command execution, enabling attackers to trigger a Denial of Service condition with repeated actions.

The Impact of CVE-2023-44177

The vulnerability could result in a sustained Denial of Service (DoS) situation, affecting both Junos OS and Junos OS Evolved.

Technical Details of CVE-2023-44177

This section provides a deeper insight into the technical aspects of the CVE-2023-44177 vulnerability.

Vulnerability Description

The vulnerability allows a low privileged attacker to execute specific CLI commands in Juniper Networks' Junos and Junos EVO, leading to a DoS situation through a Stack-based Buffer Overflow.

Affected Systems and Versions

Various versions of Junos OS and Junos OS Evolved are impacted, with specific version ranges prone to exploitation.

Exploitation Mechanism

While the Juniper SIRT has not observed any malicious exploitation, the vulnerability can be triggered by executing specific CLI commands.

Mitigation and Prevention

This section outlines the steps to mitigate the CVE-2023-44177 vulnerability and prevent potential exploitation.

Immediate Steps to Take

To mitigate the risk, implement access lists or firewall filters to restrict CLI access to trusted hosts and administrators.

Long-Term Security Practices

Regularly update Juniper Networks' Junos OS and Junos OS Evolved to the patched versions specified in the solutions section.

Patching and Updates

Ensure that the following software releases are installed to address the vulnerability in Junos OS and Junos OS Evolved.

Junos OS: 19.1R3-S10, 19.2R3-S7, 19.3R3-S8, 19.4R3-S12, 20.2R3-S8, 20.4R3-S8, 21.2R3-S5, 21.2R3-S6, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R3, 22.4R2, 22.4R3, 23.2R1, and subsequent releases.
Junos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S1-EVO, 22.3R3-EVO, 22.4R2-EVO, 22.4R3-EVO, 23.2R1-EVO, and subsequent releases.