CVE-2015-1064 in iOS
Summary
by MITRE
Springboard in Apple iOS before 8.2 allows physically proximate attackers to bypass an intended activation requirement and read the home screen by leveraging an application crash during the activation process.
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Analysis
by VulDB Data Team • 04/15/2022
The vulnerability identified as CVE-2015-1064 affects Apple iOS versions prior to 8.2 and represents a significant security flaw in the device's activation and home screen protection mechanisms. This issue resides within the Springboard component which serves as the core interface management system for iOS devices, handling everything from the lock screen to home screen navigation. The vulnerability specifically exploits a timing window during the device activation process where the system fails to properly enforce activation requirements when applications crash unexpectedly. This creates a window of opportunity for attackers who are physically proximate to the device to bypass the intended security controls that should prevent unauthorized access to the home screen content.
The technical implementation of this vulnerability stems from improper state management within the Springboard process during device activation. When an application crashes while the device is in the activation phase, the system fails to properly validate whether the activation requirements have been fully satisfied before granting access to the home screen interface. This flaw allows attackers to manipulate the device's state by triggering application crashes at specific moments during the activation sequence, effectively creating a bypass mechanism for the device's intended security restrictions. The vulnerability is classified under CWE-284 Access Control Bypass, which specifically addresses situations where systems fail to properly enforce access control mechanisms. The attack vector requires physical proximity to the device, making this a local privilege escalation issue that leverages the attacker's ability to interact directly with the device during its critical boot and activation phases.
From an operational impact perspective, this vulnerability exposes users to significant privacy and security risks as attackers can gain access to home screen content, application data, and potentially sensitive information stored on the device. The activation bypass mechanism means that even devices that should be locked and protected can be accessed by unauthorized individuals who are physically present with the device. This represents a fundamental failure in iOS's security architecture during the device's most critical initialization phase. The vulnerability affects all iOS devices running versions before 8.2, including iPhones, iPads, and iPod touches, creating a widespread security concern for millions of users. The impact extends beyond simple information disclosure as it undermines the basic security model of iOS devices, which relies on proper activation and locking mechanisms to protect user data.
The mitigation strategy for this vulnerability involves updating to iOS 8.2 or later versions where Apple has implemented proper state validation and activation requirement enforcement during the device boot process. The fix addresses the underlying race condition in the Springboard component by ensuring that device activation requirements are properly verified regardless of application crashes during the activation sequence. Organizations should prioritize immediate deployment of this security update across all affected iOS devices and implement additional security measures such as strong passcode policies and device encryption. Security professionals should monitor for potential exploitation attempts targeting this vulnerability and consider the broader implications for mobile device management policies. The ATT&CK framework categorizes this as a privilege escalation technique through system binary modification, though in this case the escalation occurs through improper activation state handling rather than direct binary manipulation. This vulnerability highlights the importance of proper state management in security-critical systems and demonstrates how seemingly minor implementation flaws can create significant security risks during device initialization phases.