CVE-2012-3750 in iOS
Summary
by MITRE
The Passcode Lock implementation in Apple iOS before 6.0.1 does not properly manage the lock state, which allows physically proximate attackers to bypass an intended passcode requirement and access Passbook passes via unspecified vectors.
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Analysis
by VulDB Data Team • 04/18/2021
The vulnerability described in CVE-2012-3750 represents a critical security flaw in Apple iOS versions prior to 6.0.1 that specifically targets the passcode lock implementation within the Passbook application. This weakness stems from improper management of the device's lock state, creating a scenario where unauthorized physical access can circumvent the intended security controls designed to protect sensitive passbook data. The vulnerability's classification aligns with CWE-284, which addresses improper access control mechanisms, particularly in mobile operating systems where physical proximity can be exploited to bypass authentication requirements.
The technical execution of this vulnerability occurs through unspecified vectors that exploit the inconsistent handling of device lock states within the iOS Passbook framework. Attackers capable of physical proximity to a locked device can manipulate the system's passcode enforcement mechanisms, potentially gaining access to digital passes, tickets, coupons, and other sensitive information stored within the Passbook application. This flaw demonstrates a fundamental failure in the operating system's security model where the boundary between authenticated and unauthenticated states becomes compromised, allowing unauthorized access to protected data without proper authentication.
The operational impact of this vulnerability extends beyond simple data exposure, as Passbook contains sensitive personal and financial information including loyalty cards, event tickets, boarding passes, and other digital credentials that could be exploited for identity theft, fraud, or unauthorized access to services. The vulnerability's nature as a lock state management failure means that even devices properly secured with passcodes could be accessed by attackers who exploit the timing or sequence of lock/unlock operations. This creates a significant risk for users who rely on iOS devices for storing sensitive digital assets and represents a failure in the principle of least privilege within the mobile security architecture.
Mitigation strategies for this vulnerability require immediate system updates to iOS 6.0.1 or later versions where Apple has addressed the lock state management implementation. Organizations should implement comprehensive mobile device management policies that enforce automatic lock timeouts and require strong authentication mechanisms. The remediation approach should also include user education regarding the importance of physical security controls and the risks associated with leaving devices unattended. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, specifically targeting the initial access phase where physical proximity provides the attack vector. Security teams should monitor for potential exploitation attempts and implement additional controls such as device encryption, remote wipe capabilities, and enhanced monitoring of passbook application usage patterns to detect anomalous access behaviors that could indicate exploitation attempts.