CVE-2023-32632 in YF325
Summary
by MITRE • 10/25/2023
A command execution vulnerability exists in the validate.so diag_ping_start functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to command execution. An attacker can send a network request to trigger this vulnerability.
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Analysis
by VulDB Data Team • 10/31/2023
The vulnerability identified as CVE-2023-32632 represents a critical command execution flaw within the Yifan YF325 v1.0_20221108 network device firmware. This issue specifically resides in the validate.so module's diag_ping_start functionality, which is designed to handle diagnostic ping operations. The vulnerability stems from inadequate input validation and sanitization within the diagnostic interface, creating a pathway for malicious actors to inject and execute arbitrary commands on the affected device. The flaw manifests when the system processes network requests containing specially crafted payloads that bypass normal validation mechanisms, ultimately allowing unauthorized command execution with the privileges of the running service.
The technical implementation of this vulnerability aligns with CWE-78, which describes improper neutralization of special elements used in OS commands, and CWE-94, covering improper control of generation of code. The affected diag_ping_start function fails to properly sanitize user-supplied input parameters that are subsequently passed to system execution functions. This design flaw enables attackers to manipulate the command execution flow by injecting malicious command sequences through network requests targeting the vulnerable diagnostic interface. The vulnerability's exploitation requires minimal privileges since it operates within the context of the network service, potentially allowing attackers to escalate their access to system-level operations. The attack vector is network-based, requiring only that an attacker can send requests to the device, making this vulnerability particularly dangerous as it can be exploited remotely without physical access.
The operational impact of CVE-2023-32632 extends beyond simple command execution, as it can enable complete system compromise of the affected Yifan YF325 devices. Attackers can leverage this vulnerability to gain persistent access, install backdoors, modify system configurations, or exfiltrate sensitive data from the network infrastructure. The implications are particularly severe in industrial control systems and network security environments where these devices may serve as critical infrastructure components. The vulnerability's presence in a diagnostic function suggests potential misconfiguration or over-permissive access controls that may expose additional attack surfaces within the device's operational framework. Organizations utilizing this specific firmware version face significant risk of unauthorized access and potential disruption of critical network operations, particularly in environments where network monitoring and diagnostic capabilities are essential for system management.
Mitigation strategies for CVE-2023-32632 should prioritize immediate firmware updates from the vendor to address the root cause of the command injection vulnerability. Network administrators must implement strict access controls and firewall rules to restrict access to diagnostic interfaces, limiting exposure to trusted networks only. The principle of least privilege should be enforced by disabling unnecessary diagnostic functions and ensuring that only authorized personnel can access the affected functionality. Additionally, network monitoring should be enhanced to detect anomalous requests targeting the diag_ping_start endpoint, with intrusion detection systems configured to flag potential exploitation attempts. Organizations should conduct comprehensive vulnerability assessments of their network infrastructure to identify other potentially affected devices running similar firmware versions, while implementing network segmentation to limit the potential lateral movement of attackers who might successfully exploit this vulnerability. The remediation process should also include regular security audits of network device configurations and the implementation of secure coding practices for any custom diagnostic or management interfaces.