CVE-2018-1000091 in KadNode
Summary
by MITRE
KadNode version version 2.2.0 contains a Buffer Overflow vulnerability in Arguments when starting up the binary that can result in Control of program execution flow, leading to remote code execution.
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Analysis
by VulDB Data Team • 02/21/2023
The vulnerability identified as CVE-2018-1000091 affects KadNode version 2.2.0 and represents a critical buffer overflow condition that occurs during the binary startup process. This flaw exists within the argument parsing mechanism where insufficient input validation allows malicious actors to craft specially formatted command line arguments that exceed allocated memory buffers. The vulnerability stems from improper bounds checking in the argument handling code, creating an exploitable condition that can be leveraged to overwrite adjacent memory locations. The buffer overflow specifically manifests when the application processes command line parameters during initialization, making it particularly dangerous as it can be triggered simply by executing the vulnerable binary with malicious arguments. This type of vulnerability falls under CWE-121 which categorizes buffer overflow conditions where insufficient bounds checking allows memory to be overwritten, potentially leading to arbitrary code execution.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it provides attackers with the capability to completely compromise the execution flow of the targeted application. When exploited successfully, the buffer overflow allows an attacker to redirect program execution to arbitrary code locations within the process memory space, effectively enabling remote code execution capabilities. The attack vector requires only that an attacker can influence the command line arguments passed to the KadNode binary during startup, which can occur through various means including command injection in scripts, web interfaces that invoke the binary, or direct manipulation of launch parameters. This vulnerability represents a significant risk in environments where the KadNode service runs with elevated privileges or where it is exposed to untrusted network traffic. The exploitability of this condition is enhanced by the fact that it occurs during the application's initialization phase, meaning that any process that launches the vulnerable binary can be targeted, including automated systems or services that invoke the application programmatically.
Mitigation strategies for CVE-2018-1000091 should focus on both immediate remediation and long-term architectural improvements. The most effective immediate solution involves upgrading to a patched version of KadNode that addresses the buffer overflow condition in the argument parsing code. Organizations should also implement strict input validation and sanitization measures for all command line arguments that are processed by the application, ensuring that parameter lengths are properly bounded and that no malicious data can be passed to the vulnerable parsing functions. Additionally, system hardening measures including privilege separation, process isolation, and input filtering should be implemented to reduce the potential impact of successful exploitation attempts. The vulnerability demonstrates the importance of applying principle of least privilege and defensive programming practices, particularly in critical infrastructure components. Organizations should also consider implementing runtime protections such as stack canaries, address space layout randomization, and data execution prevention mechanisms to make exploitation more difficult even if the underlying buffer overflow vulnerability is not fully patched. This vulnerability aligns with several ATT&CK techniques including privilege escalation through exploitation of software vulnerabilities and execution through command and script interpreter. The attack pattern follows typical exploitation workflows where initial access is gained through vulnerable input processing, leading to full system compromise through code execution. The remediation approach should include comprehensive vulnerability scanning to identify all instances of the vulnerable KadNode version across the organization and ensure proper patch management processes are in place to prevent similar issues in the future.