CVE-2015-7080 in iOS
Summary
by MITRE
Siri in Apple iOS before 9.2 allows physically proximate attackers to bypass an intended client-side protection mechanism and obtain sensitive content-notification information by listening to a device in the lock-screen state.
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Analysis
by VulDB Data Team • 06/30/2022
The vulnerability identified as CVE-2015-7080 represents a significant security flaw in Apple iOS versions prior to 9.2 that affects the Siri voice recognition system. This weakness stems from inadequate protection mechanisms that fail to properly secure sensitive notification data when a device is in lock-screen mode. The vulnerability specifically targets the client-side security controls designed to prevent unauthorized access to information that should remain protected while the device is locked.
The technical exploitation of this vulnerability occurs through physical proximity attacks where an attacker can intercept and access notification content simply by being in close proximity to the target device. The flaw lies in the improper implementation of access controls within the Siri system, which fails to adequately verify the security context when processing voice commands. This allows unauthorized information disclosure even when the device appears to be properly secured through its lock-screen interface. The vulnerability demonstrates a failure in the principle of least privilege and proper access control enforcement within the iOS security framework.
From an operational impact perspective, this vulnerability exposes sensitive information that users might not expect to be accessible through simple proximity attacks. The security implications extend beyond basic notification data to potentially include personal communications, calendar entries, messages, and other confidential information that users rely on being protected while their device is locked. Attackers can leverage this vulnerability to perform information gathering activities without requiring additional authentication factors or sophisticated attack vectors, making it particularly concerning for users who frequently use Siri in public or shared environments.
The vulnerability aligns with CWE-284, which addresses improper access control issues in software systems, and demonstrates how inadequate implementation of security controls can create attack surfaces that bypass intended protection mechanisms. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and information gathering, specifically leveraging physical access to extract sensitive data. The flaw represents a critical weakness in the iOS security model that undermines user expectations of device security and privacy protection.
Mitigation strategies for this vulnerability primarily involve upgrading to iOS version 9.2 or later, which includes enhanced protection mechanisms for notification data and improved access controls for Siri functionality. Organizations should implement comprehensive mobile device management policies that ensure timely security updates and regular security assessments. Additional protective measures include disabling Siri when devices are in lock-screen mode, implementing stronger physical security controls for devices in public spaces, and conducting regular security awareness training to educate users about the risks of physical proximity attacks. The vulnerability underscores the importance of maintaining up-to-date security patches and proper configuration management as essential components of overall cybersecurity defense strategies.