CVE-2012-1923 in Helix Server
Summary
by MITRE
RealNetworks Helix Server and Helix Mobile Server 14.x before 14.3.x store passwords in cleartext under adm_b_db\users\, which allows local users to obtain sensitive information by reading a database.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 03/22/2021
The vulnerability identified as CVE-2012-1923 affects RealNetworks Helix Server and Helix Mobile Server versions 14.x prior to 14.3.x, representing a critical security flaw in the authentication and access control mechanisms of these media streaming platforms. This issue stems from the improper handling of user credentials within the application's file system structure, specifically within the adm_b_db\users\ directory where password information is stored in plaintext format rather than being properly encrypted or hashed. The flaw exposes sensitive authentication data to local users who may have access to the system's file system, creating a significant vector for privilege escalation and unauthorized access to the media streaming services.
The technical implementation of this vulnerability demonstrates a clear violation of security best practices and can be categorized under CWE-312, which specifically addresses the exposure of sensitive information through cleartext storage of credentials. The flaw operates at the application layer where user authentication data is persisted in an insecure manner, allowing any local user with read access to the affected directory to directly extract password information. This represents a fundamental failure in the principle of least privilege and demonstrates poor input validation and secure coding practices within the Helix Server software implementation. The cleartext storage approach directly contradicts industry standards such as those outlined in the OWASP Top Ten, which emphasizes the importance of protecting sensitive data through proper encryption and hashing mechanisms.
The operational impact of this vulnerability extends beyond simple credential theft, as it enables attackers to gain unauthorized access to media streaming services and potentially compromise the entire server infrastructure. Local users who can read files in the adm_b_db\users\ directory can extract administrative credentials and use them to manipulate media content, modify server configurations, or even escalate privileges within the system. This vulnerability particularly affects organizations that deploy Helix Server for content distribution or streaming services, as it provides attackers with direct access to administrative accounts that could be used to modify or corrupt media libraries, disrupt services, or establish persistent access points within the network environment. The attack surface is further expanded when considering that local access to the system is often easier to achieve than remote exploitation, making this vulnerability particularly dangerous in environments where physical or administrative access controls may be insufficient.
Mitigation strategies for CVE-2012-1923 should prioritize immediate patching of affected systems to version 14.3.x or later, which contains the necessary security fixes to properly encrypt or hash password storage. Organizations should also implement comprehensive access controls to restrict file system access to the adm_b_db\users\ directory and related authentication files, ensuring that only authorized system processes can read these sensitive data stores. Security configurations should include regular audits of file permissions and access logs to detect unauthorized access attempts to credential storage locations. Additionally, system administrators should consider implementing network segmentation and monitoring solutions to detect suspicious activities around authentication data access. The vulnerability aligns with ATT&CK technique T1566, which covers credential access through unauthorized access to credentials, and T1078, which addresses legitimate credentials used for persistence. Organizations should also review their overall security posture and ensure proper implementation of the principle of least privilege, ensuring that authentication data is stored securely and that access controls are properly enforced at all levels of the system architecture.