CVE-2023-1000 in dcnnt-py
Summary
by MITRE • 04/27/2024
A vulnerability was found in cyanomiko dcnnt-py up to 0.9.0. It has been classified as critical. Affected is the function main of the file dcnnt/plugins/notifications.py of the component Notification Handler. The manipulation leads to command injection. It is possible to launch the attack remotely. Upgrading to version 0.9.1 is able to address this issue. The patch is identified as b4021d784a97e25151a5353aa763a741e9a148f5. It is recommended to upgrade the affected component. VDB-262230 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 05/30/2024
The vulnerability identified as CVE-2023-1000 represents a critical command injection flaw within the cyanomiko dcnnt-py Python package version 0.9.0 and earlier. This vulnerability resides in the Notification Handler component, specifically within the main function of the dcnnt/plugins/notifications.py file. The flaw enables remote code execution through improper input validation and sanitization, allowing attackers to inject and execute arbitrary commands on the affected system. The vulnerability has been classified with a critical severity rating due to its remote exploitability and the potential for complete system compromise. This type of vulnerability falls under CWE-77 and CWE-94 categories, representing command injection and execution of untrusted code respectively, both of which are fundamental security concerns in software development. The ATT&CK framework would categorize this under T1059.001 for command and script interpreter execution, with potential lateral movement and persistence opportunities once initial access is achieved.
The technical exploitation of this vulnerability occurs through the notification handler's main function which likely processes user-provided input without adequate sanitization before executing system commands. Attackers can manipulate the input parameters to inject malicious commands that get executed within the context of the application, potentially allowing full system compromise. The remote attack vector means that adversaries do not require local system access to exploit this vulnerability, making it particularly dangerous for networked environments. The command injection flaw suggests that the application uses system calls or shell execution functions without proper input validation, creating a pathway for attackers to execute arbitrary code on the target system. This vulnerability demonstrates poor input validation practices and inadequate security controls in the application's handling of external inputs, which is a common pattern in software security flaws.
The operational impact of this vulnerability extends beyond simple remote code execution to potentially enable complete system compromise, data exfiltration, and persistence mechanisms. An attacker who successfully exploits this vulnerability could gain full control over the affected system, potentially using it as a foothold for further attacks within the network. The notification handler component suggests this vulnerability may be present in systems handling security alerts, monitoring, or administrative notifications, which could provide attackers with access to critical system information. Organizations using affected versions of this package may experience unauthorized access to their systems, potential data breaches, and disruption of services. The vulnerability also impacts the integrity and availability of systems that rely on this notification functionality, as attackers could potentially disrupt notification services or manipulate alerting mechanisms. Security teams may face challenges in detecting and mitigating this vulnerability due to its remote nature and the potential for sophisticated attack techniques.
The recommended mitigation strategy involves immediate upgrading to version 0.9.1 of the cyanomiko dcnnt-py package, which contains the patch identified by the commit hash b4021d784a97e25151a5353aa763a741e9a148f5. This upgrade addresses the command injection vulnerability by implementing proper input validation and sanitization within the notification handler's main function. Organizations should conduct thorough testing of the updated package to ensure compatibility with existing systems and workflows. Additional mitigations include implementing network segmentation to limit access to systems running this vulnerable component, monitoring for suspicious network traffic patterns, and applying principle of least privilege access controls to reduce the potential impact of successful exploitation. Security teams should also consider implementing web application firewalls or intrusion detection systems to detect and block potential exploitation attempts. The vulnerability highlights the importance of regular security updates and proper input validation practices in preventing command injection attacks. Organizations should establish robust patch management processes to ensure timely deployment of security updates and maintain inventory of all vulnerable components across their infrastructure.