CVE-2017-12928 in DLX Spot Player4
Summary
by MITRE
A hard-coded password of tecn0visi0n for the dlxuser account in TecnoVISION DLX Spot Player4 (all known versions) allows remote attackers to log in via SSH and escalate privileges to root access with the same credentials.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 06/22/2024
The vulnerability identified as CVE-2017-12928 represents a critical security flaw in TecnoVISION DLX Spot Player4 devices where a hard-coded password is embedded within the system configuration. This weakness affects all known versions of the DLX Spot Player4, creating a persistent backdoor that remains exploitable across the entire product lifecycle. The specific credential configuration involves the password "tecn0visi0n" being permanently associated with the dlxuser account, which is a clear violation of security best practices and fundamental principles of credential management.
The technical implementation of this vulnerability stems from the embedded hard-coded credentials within the device firmware, which is categorized under CWE-798 as the use of hard-coded credentials. The flaw allows unauthorized remote attackers to establish an initial foothold through SSH access using the predictable credentials, effectively bypassing all authentication mechanisms that should normally protect the system. This remote access capability enables attackers to execute commands with elevated privileges, as the same hard-coded credentials provide direct access to root-level system functions and administrative controls.
The operational impact of this vulnerability is severe and far-reaching, as it provides attackers with complete system compromise without requiring any specialized knowledge of the target environment or sophisticated exploitation techniques. Once an attacker gains access through SSH using the hard-coded credentials, they can escalate privileges to root access, effectively controlling the entire device and potentially using it as a launching point for further attacks within the network. This vulnerability directly maps to ATT&CK technique T1078.004 which covers legitimate credentials and T1059.001 for command and scripting interpreter, as attackers can execute arbitrary commands with system-level privileges.
The implications extend beyond immediate device compromise, as this vulnerability creates a persistent threat vector that remains active across all versions of the affected software. The hard-coded nature of the credentials means that even if the device is updated or reconfigured, the vulnerability persists unless the firmware itself is modified to remove the hardcoded values. Organizations deploying these devices face significant risk of unauthorized access, data exfiltration, and potential use as a pivot point for attacking other systems within their network infrastructure. The vulnerability also highlights the importance of secure configuration management and proper credential handling practices as outlined in security frameworks such as NIST SP 800-53 and ISO/IEC 27001. Mitigation strategies should include immediate firmware updates from the vendor when available, network segmentation to limit access to affected devices, and implementation of monitoring solutions to detect unauthorized SSH access attempts.