CVE-2017-2427 in macOS
Summary
by MITRE
An issue was discovered in certain Apple products. macOS before 10.12.4 is affected. The issue involves the "Bluetooth" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
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Analysis
by VulDB Data Team • 11/15/2022
The vulnerability identified as CVE-2017-2427 represents a critical security flaw within Apple's macOS operating system affecting versions prior to 10.12.4. This weakness specifically resides within the Bluetooth component of the system, demonstrating how wireless connectivity frameworks can become attack vectors for sophisticated adversaries. The vulnerability's classification as a privilege escalation issue indicates that attackers could potentially leverage this flaw to gain elevated system privileges, transforming a standard application execution into a potentially devastating security breach. The Bluetooth subsystem in macOS handles numerous wireless communication protocols and device interactions, making it a prime target for attackers seeking to establish persistent access to affected systems.
The technical nature of this vulnerability involves memory corruption that occurs when processing crafted applications or Bluetooth communication packets. This type of flaw typically arises from inadequate input validation or buffer overflow conditions within the Bluetooth driver or framework code. Attackers can exploit this weakness by creating malicious applications that, when executed on an affected system, trigger the memory corruption behavior. The vulnerability's ability to allow arbitrary code execution in a privileged context means that successful exploitation could enable attackers to install malware, modify system files, or establish backdoors without user interaction. This particular flaw demonstrates how wireless protocols can become attack surfaces where untrusted input processing leads to system compromise, aligning with common software security principles that emphasize the importance of validating all inputs from external sources.
The operational impact of CVE-2017-2427 extends beyond simple denial of service scenarios, as the potential for arbitrary code execution in privileged contexts creates significant risk for enterprise and individual users alike. Organizations running affected macOS versions face potential data breaches, system compromise, and unauthorized access to sensitive information stored on or transmitted through Bluetooth-enabled devices. The vulnerability's exploitation could lead to persistent threats where attackers maintain access even after initial compromise, making it particularly dangerous for environments where macOS systems handle confidential data. This flaw particularly impacts scenarios where users might unknowingly interact with malicious Bluetooth devices or applications, as the attack could occur without explicit user consent or awareness. The memory corruption aspect also means that system stability could be compromised, potentially leading to unexpected crashes or system reboots that could disrupt business operations.
Mitigation strategies for this vulnerability primarily focus on immediate system updates to macOS 10.12.4 or later versions, which contain patches addressing the Bluetooth memory corruption issue. System administrators should prioritize deployment of these security updates across all affected devices within their environments, particularly in enterprise settings where multiple macOS systems may be exposed to similar risks. Additional defensive measures include implementing Bluetooth device access controls, disabling Bluetooth when not in use, and monitoring for unusual Bluetooth activity patterns that might indicate exploitation attempts. Network administrators should consider deploying endpoint protection solutions that can detect and prevent exploitation attempts targeting this specific vulnerability. The ATT&CK framework would categorize this vulnerability under privilege escalation techniques, specifically targeting the 'Exploitation for Privilege Escalation' tactic, while CWE classification would identify it as a memory corruption vulnerability that allows for code execution in privileged contexts. Organizations should also implement comprehensive vulnerability management processes to ensure timely patch deployment and maintain awareness of similar Bluetooth-related security issues that may affect their environments.