CVE-2005-2716 in Affix
Summary
by MITRE
The event_pin_code_request function in the btsrv daemon (btsrv.c) in Nokia Affix 2.1.2 and 3.2.0 allows remote attackers to execute arbitrary commands via shell metacharacters in a Bluetooth device name.
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Analysis
by VulDB Data Team • 06/09/2019
The vulnerability identified as CVE-2005-2716 represents a critical command injection flaw within the Bluetooth services implementation of Nokia Affix software versions 2.1.2 and 3.2.0. This issue resides in the btsrv daemon component specifically within the event_pin_code_request function in the btsrv.c source file, making it a fundamental security weakness in the Bluetooth protocol stack implementation. The vulnerability stems from inadequate input validation and sanitization of Bluetooth device names, which are transmitted over wireless networks and processed by the affected daemon. This flaw creates a dangerous attack surface where remote adversaries can manipulate the system through Bluetooth communication channels without requiring physical access or authentication credentials.
The technical exploitation of this vulnerability occurs when a malicious Bluetooth device attempts to establish connection with a vulnerable system by providing a specially crafted device name containing shell metacharacters. The btsrv daemon processes this device name directly without proper sanitization, allowing attackers to inject arbitrary shell commands that execute with the privileges of the daemon process. This type of vulnerability maps directly to CWE-77 and CWE-94 within the Common Weakness Enumeration framework, representing improper input validation and code injection respectively. The attack vector operates through the Bluetooth protocol stack where device names are used for identification purposes but become execution vectors due to insufficient security controls.
From an operational perspective, this vulnerability presents significant risks to organizations relying on Nokia Affix Bluetooth services for network connectivity and device management. The remote execution capability means attackers can potentially gain full control over systems running vulnerable versions of the software, enabling them to install malware, establish backdoors, or perform reconnaissance activities. The impact extends beyond individual system compromise as Bluetooth-enabled devices often serve as entry points for broader network infiltration. The vulnerability affects the confidentiality, integrity, and availability of the affected systems, with potential for lateral movement within networks where Bluetooth services are exposed. This aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1021.002 for remote services.
Effective mitigation strategies for CVE-2005-2716 require immediate patching of affected Nokia Affix versions to address the input validation flaw in the btsrv daemon. Organizations should implement network segmentation to isolate Bluetooth services from critical systems and consider disabling Bluetooth functionality when not actively required. Additional protective measures include monitoring Bluetooth device name registrations for suspicious patterns and implementing network-based intrusion detection systems that can identify anomalous Bluetooth traffic. The vulnerability demonstrates the importance of input sanitization in network services and highlights how seemingly benign data fields can become dangerous attack vectors when proper security controls are absent. Organizations should also review their Bluetooth security policies and ensure that all wireless services undergo rigorous security testing before deployment.