CVE-2023-28343 is a critical OS command injection vulnerability affecting the APsystems Energy Communication Unit Firmware version C1.2.5. This vulnerability allows attackers to exploit the system through shell metacharacters in the timezone parameter of the index.php/management/set_timezone endpoint. The root cause of this issue lies in the improper handling of user input in the set_timezone function defined in models/management_model.php.
With a CVSS score of 9.8, this vulnerability is classified as critical due to its potential to compromise the confidentiality, integrity, and availability of affected systems. The attack vector is network-based, requiring no user interaction or privileges, which increases the risk of exploitation in real-world environments.
Organizations utilizing APsystems Energy Communication Unit Firmware should take this vulnerability seriously as it poses significant risks, including unauthorized access, data manipulation, and service disruptions. Given the exploitation status, organizations are urged to prioritize remediation efforts immediately.
The urgency for defenders cannot be overstated; organizations must address this vulnerability in their immediate patch cycle to prevent potential exploitation by attackers.
Vulnerability Details
The vulnerability is categorized under CWE-78, which pertains to OS command injection. The CVSS v3.1 vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating the attack vector is network-based, with low complexity and no privileges required.
The vulnerability affects version C1.2.5 of the APsystems Energy Communication Unit Firmware, which is used in various applications requiring energy management and monitoring.
This vulnerability was disclosed on March 14, 2023, and necessitates that organizations remain vigilant in their security posture regarding OS command injection vulnerabilities.
Technical Analysis
The root cause of the vulnerability stems from insufficient input validation in the timezone parameter of the index.php/management/set_timezone endpoint. Attackers may leverage this flaw to execute arbitrary commands on the server, leading to a full system compromise.
The attack vector is network-based, allowing remote attackers to exploit this vulnerability without needing physical access to the device. The complexity of the attack is low, requiring no special privileges or user interaction, which makes it easier for attackers to exploit this vulnerability effectively.
The impacts of this vulnerability on confidentiality, integrity, and availability are high, as attackers can manipulate system configurations and data, potentially leading to significant operational disruptions.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive data, manipulation of system configurations, and potential service outages. The critical nature of this vulnerability means that it could serve as a gateway for further attacks on network infrastructure.
The vulnerability's high exploitability score indicates a significant likelihood of successful exploitation in the wild. Given the low complexity of the attack, organizations must consider the blast radius of this vulnerability, which could extend beyond the immediate affected systems.
Organizations should address this vulnerability immediately to mitigate the risk of exploitation. The urgency is underscored by its CVSS score of 9.8, necessitating immediate attention during the patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is C1.2.5 of the APsystems Energy Communication Unit Firmware. Organizations should consider all versions prior to vendor patch as potentially vulnerable until the issue is resolved.
Mitigation & Remediation
Organizations must apply the patch provided by APsystems for version C1.2.5 of the Energy Communication Unit Firmware. If a patch is not yet available, it is recommended to implement input validation to sanitize user inputs and prevent command injection.
For guidance on effective remediation strategies, organizations can refer to our comprehensive penetration testing services.
Detection Guidance
Organizations should monitor logs for unusual activities, particularly around the management interfaces. Behavioral anomalies may indicate attempts to exploit this vulnerability. Additionally, network signatures should be developed to detect malicious requests aiming to exploit command injection vulnerabilities.
AppSecure Threat Intelligence Insight
CVE-2023-28343 highlights ongoing risks associated with command injection vulnerabilities in widely used software. Security teams must remain vigilant and proactive in their monitoring strategies to detect and mitigate these threats.
This vulnerability underscores the importance of input validation and proper coding practices. Organizations should consider adopting a comprehensive vulnerability management program to proactively identify and remediate similar vulnerabilities in their systems.
Additionally, engaging in regular penetration testing can help organizations uncover vulnerabilities before attackers do.
Finally, as the landscape of cyber threats continues to evolve, organizations must prioritize security awareness and training for their teams to prepare for emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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