CVE-2019-15304 in Grill Temperature Monitor
Summary
by MITRE
Lierda Grill Temperature Monitor V1.00_50006 has a default password of admin for the admin account, which allows an attacker to cause a Denial of Service or Information Disclosure via the undocumented access-point configuration page located on the device. NOTE: this device also ships with ProGrade branding.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 12/04/2023
This vulnerability affects the Lierda Grill Temperature Monitor V1.00_50006 device which is also branded as ProGrade, presenting a critical security weakness through the use of a default administrative password. The device exposes an undocumented configuration page that can be accessed using the hardcoded credentials admin/admin, creating an attack surface that enables unauthorized individuals to gain administrative control over the device. The default credential vulnerability represents a fundamental security flaw that violates industry best practices for device security and authentication.
The technical implementation of this vulnerability stems from the device's failure to properly secure its administrative interface. The hardcoded password admin for the administrative account creates a persistent security risk that remains unchanged regardless of device deployment or security updates. The undocumented nature of the access point configuration page means that legitimate administrators may not be aware of its existence, while malicious actors can discover and exploit it without requiring advanced technical knowledge or specialized tools. This design flaw directly maps to CWE-798, which addresses the use of hard-coded credentials, and CWE-259, which covers the use of weak passwords.
The operational impact of this vulnerability extends beyond simple unauthorized access, as attackers can leverage the administrative privileges to execute denial of service attacks or extract sensitive information from the device. The configuration page likely contains device-specific settings, network parameters, and potentially user data that could be accessed or modified by unauthorized parties. This capability allows for various attack vectors including but not limited to network disruption through configuration changes, data exfiltration, or the establishment of persistent access points within the network infrastructure. The vulnerability affects the device's availability, confidentiality, and integrity as outlined in the CIA triad.
Security professionals should immediately implement mitigation strategies including changing default passwords, disabling unnecessary services, and restricting network access to the device. Network segmentation and firewall rules should be implemented to limit access to the device to authorized personnel only. The device should be updated with firmware patches if available, though the nature of the vulnerability suggests that a complete reconfiguration or replacement of the device may be necessary. Organizations should also conduct comprehensive network assessments to identify similar vulnerabilities in other IoT devices and implement robust credential management policies. This vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and T1499 which covers network denial of service attacks, demonstrating the multi-faceted nature of the threat. Regular security audits and vulnerability assessments should be conducted to prevent similar issues in future deployments and ensure compliance with security frameworks such as NIST SP 800-82 and ISO 27001.