CVE-2018-7047 in Streaming Engine
Summary
by MITRE
An issue was discovered in the MBeans Server in Wowza Streaming Engine before 4.7.1. The file system may be read and written to via JMX using the default JMX credentials (remote code execution may be possible as well).
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Analysis
by VulDB Data Team • 01/09/2020
The vulnerability identified as CVE-2018-7047 represents a critical security flaw within the MBeans Server component of Wowza Streaming Engine versions prior to 4.7.1. This issue stems from the improper configuration of Java Management Extensions which allows unauthorized access to the underlying file system through default credentials. The vulnerability exists in the management interface that exposes administrative functions without adequate authentication mechanisms, creating a significant attack surface for malicious actors seeking to compromise streaming server environments.
The technical exploitation of this vulnerability occurs through the default JMX credentials that remain unchanged in affected versions of the software. Attackers can leverage these default credentials to establish remote connections to the MBeans Server and subsequently perform file system operations including read and write access to critical system files. The flaw operates at the application layer and can be classified under CWE-255 Credentials Management Vulnerabilities, specifically CWE-256 Weak Credentials. The vulnerability enables an attacker to potentially escalate privileges and achieve remote code execution, making it particularly dangerous for streaming environments that handle sensitive media content and network traffic.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it fundamentally compromises the integrity and confidentiality of streaming server operations. Organizations using vulnerable versions of Wowza Streaming Engine face risks including data theft, service disruption, and potential lateral movement within their network infrastructure. The default credentials approach commonly found in this vulnerability aligns with ATT&CK technique T1078 Valid Accounts, where adversaries leverage default or weak credentials to gain initial access. Additionally, the ability to perform file system operations maps to ATT&CK technique T1070 Indicator Removal on Host, as attackers could potentially modify or delete critical system files to cover their tracks.
Mitigation strategies for CVE-2018-7047 require immediate implementation of several security controls including the mandatory change of default JMX credentials, enabling strong authentication mechanisms, and restricting network access to the MBeans Server. Organizations should implement network segmentation to limit exposure of management interfaces and ensure that only authorized administrative users can access these critical components. The vulnerability demonstrates the importance of proper credential management and access control configuration as outlined in security frameworks such as NIST SP 800-53, which emphasizes the need for robust authentication controls. Regular security assessments and vulnerability scanning should be conducted to identify similar configuration issues across all streaming and media server implementations to prevent exploitation of similar weaknesses in the broader ecosystem.