CVE-2023-40458 : Security Advisory and Response

This article provides detailed information about CVE-2023-40458, a vulnerability affecting Sierra Wireless, Inc ALEOS systems, leading to a potential Denial of Service (DoS) condition for ACEManager without affecting other router functions.

Understanding CVE-2023-40458

CVE-2023-40458 refers to a Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability discovered in Sierra Wireless, Inc ALEOS systems, allowing a remote attacker to trigger a DoS condition for ACEManager.

What is CVE-2023-40458?

CVE-2023-40458 involves a vulnerability in Sierra Wireless, Inc ALEOS that could be exploited by a remote attacker to cause a Denial of Service (DoS) condition for ACEManager without impacting other router functions. The issue can be resolved by restarting the affected device.

The Impact of CVE-2023-40458

The vulnerability, identified by CAPEC-153 Input Data Manipulation, poses a high availability impact with a CVSS v3.1 base score of 7.5, categorizing it as a high severity issue. It has the potential to disrupt the ACEManager service, leading to service unavailability.

Technical Details of CVE-2023-40458

The vulnerability stems from a Loop with Unreachable Exit Condition ('Infinite Loop') weakness in Sierra Wireless, Inc ALEOS systems. Below are further technical details:

Vulnerability Description

The vulnerability allows a remote attacker to trigger a Denial of Service (DoS) condition for ACEManager without affecting other router functions. Restarting the device clears this condition.

Affected Systems and Versions

Sierra Wireless ALEOS versions 4.10.0 and below (including 0) are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited remotely, potentially allowing an attacker to disrupt the ACEManager service without requiring any user interaction.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-40458, consider the following security measures:

Immediate Steps to Take

Apply patches and updates provided by Sierra Wireless to address the vulnerability.
Implement access controls and network segmentation to limit exposure to potential attackers.

Long-Term Security Practices

Regularly monitor and update the firmware of Sierra Wireless ALEOS systems.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Ensure that all affected Sierra Wireless ALEOS devices are updated with the latest patches released by the vendor to safeguard against CVE-2023-40458.