CVE-2017-2718 in FusionSphere OpenStack
Summary
by MITRE
FusionSphere OpenStack with software V100R006C00 and V100R006C10RC2 has two command injection vulnerabilities due to the insufficient input validation on one port. An attacker can exploit the vulnerabilities to gain root privileges by sending some messages with malicious commands.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 01/11/2023
The FusionSphere OpenStack vulnerability identified as CVE-2017-2718 represents a critical command injection flaw affecting software versions V100R006C00 and V100R006C10RC2. This vulnerability stems from inadequate input validation mechanisms within the system's port handling functionality, creating a pathway for malicious actors to execute arbitrary commands with elevated privileges. The flaw specifically targets the validation processes that govern incoming messages through a designated port interface, allowing attackers to bypass normal security controls and escalate their access rights to the system's root level.
The technical exploitation of this vulnerability follows a command injection pattern that aligns with CWE-77 and CWE-88 categories, where insufficient validation of user-supplied data enables attackers to inject malicious commands into the system's processing pipeline. The vulnerability exists at the point where the system receives and processes messages through the vulnerable port, failing to properly sanitize or validate the input before executing any commands. This allows an attacker to craft specially formatted messages containing malicious command sequences that get interpreted and executed by the underlying system processes. The attack vector specifically leverages the insufficient input validation on one port, making it a targeted rather than broad-based vulnerability.
Operationally, the impact of this vulnerability is severe as it provides attackers with complete system compromise capabilities. Successful exploitation grants root privileges, enabling full control over the FusionSphere OpenStack environment including access to all system resources, data, and administrative functions. This level of access allows attackers to modify system configurations, exfiltrate sensitive information, install persistent backdoors, or disrupt services entirely. The vulnerability's presence in both V100R006C00 and V100R006C10RC2 versions indicates a widespread issue affecting multiple releases of the software, potentially exposing numerous deployments to this risk. Organizations using these versions face significant operational risks including data breaches, service interruptions, and compliance violations.
Mitigation strategies for CVE-2017-2718 should focus on immediate patching of affected software versions, implementing robust input validation controls, and network segmentation to limit exposure. Organizations should apply the vendor-provided security patches as soon as possible to address the root cause of the vulnerability. Additionally, implementing proper input sanitization mechanisms and validating all incoming messages against strict whitelists can help prevent similar injection attacks. Network-level controls such as firewall rules and port restrictions can limit the attack surface by restricting access to the vulnerable port. The mitigation approach should align with ATT&CK framework techniques for command and control operations, specifically targeting the prevention of privilege escalation and command execution through input validation controls. Regular security assessments and monitoring of system logs should be implemented to detect potential exploitation attempts and maintain ongoing security posture.