CVE-2023-43744 : Exploit Details and Defense Strategies
Learn about CVE-2023-43744, an OS command injection flaw in Zultys MX devices, allowing unauthorized execution of system commands. Find out the impact, affected versions, and mitigation steps.
An OS command injection vulnerability in Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 17.0.10 patch 17161 and 16.04 patch 16109 allows an administrator to execute arbitrary OS commands via a file name parameter in a patch application function.
Understanding CVE-2023-43744
This section delves into the details of the CVE-2023-43744 vulnerability.
What is CVE-2023-43744?
CVE-2023-43744 is an OS command injection vulnerability found in Zultys telecommunication products. It allows an authenticated administrator to run arbitrary OS commands via a malicious file name provided during the patch application process.
The Impact of CVE-2023-43744
This vulnerability could lead to unauthorized system access, data theft, or complete compromise of the affected Zultys devices, posing a significant security risk.
Technical Details of CVE-2023-43744
This section covers the technical aspects of the CVE-2023-43744 vulnerability.
Vulnerability Description
The vulnerability arises from the lack of input validation in the patch application function of Zultys products, enabling an attacker to inject and execute malicious OS commands using crafted filenames.
Affected Systems and Versions
Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 devices running firmware versions earlier than 17.0.10 patch 17161 and 16.04 patch 16109 are vulnerable to this exploit.
Exploitation Mechanism
By exploiting this vulnerability, an attacker can manipulate the patch file name to include bash command substitution characters, which are then executed on the target operating system.
Mitigation and Prevention
In this section, we discuss the steps to mitigate and prevent the CVE-2023-43744 vulnerability.
Immediate Steps to Take
- Upgrade Zultys devices to firmware versions 17.0.10 patch 17161 or 16.04 patch 16109 to patch the vulnerability.
- Avoid applying patches from untrusted sources or with suspicious filenames.
Long-Term Security Practices
- Regularly update and patch Zultys products to the latest firmware releases to address any security vulnerabilities.
- Implement strong access controls, limiting administrator privileges to mitigate the impact of potential command injection attacks.
Patching and Updates
Stay informed about security advisories and updates from Zultys to promptly address any newly discovered vulnerabilities.