CVE-2014-1348 in iOS
Summary
by MITRE
Mail in Apple iOS before 7.1.2 advertises the availability of data protection for attachments but stores cleartext attachments under mobile/Library/Mail/, which makes it easier for physically proximate attackers to obtain sensitive information by mounting the data partition.
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Analysis
by VulDB Data Team • 02/20/2022
The vulnerability identified as CVE-2014-1348 resides within Apple iOS mail functionality prior to version 7.1.2, representing a critical security flaw in the operating system's data protection mechanisms. This issue demonstrates a fundamental inconsistency between the advertised security features and the actual implementation of data protection for email attachments. The vulnerability specifically affects how iOS handles encrypted data storage for email attachments, creating a deceptive security model that misleads users and attackers alike about the true protection status of sensitive information.
The technical flaw manifests in the mail application's handling of encrypted data protection attributes. While iOS advertises that email attachments are protected through data encryption, the actual storage mechanism fails to maintain this protection for attachments stored under the mobile/Library/Mail/ directory. This creates a scenario where sensitive email attachments are stored in cleartext format on the device's file system, despite the system's claims of encryption. The flaw exploits the gap between the user interface's security assertions and the underlying file system implementation, allowing for unauthorized access to sensitive information through simple file system enumeration.
The operational impact of this vulnerability extends significantly beyond the immediate security breach, as it enables physically proximate attackers to obtain sensitive information with minimal technical expertise. Attackers who gain physical access to an iOS device can mount the data partition and directly access the cleartext attachments stored in the Mail directory without requiring sophisticated exploitation techniques. This vulnerability essentially undermines the principle of data protection at rest, as the system's advertised security features become meaningless when the actual storage mechanism fails to maintain encryption. The attack vector is particularly concerning because it requires only physical proximity to the device and basic file system access, making it accessible to a wide range of threat actors.
The vulnerability aligns with CWE-310, which addresses cryptographic issues related to weak encryption or improper implementation of cryptographic functions, and also relates to CWE-250, which covers improper handling of privilege levels. From an adversarial perspective, this flaw maps directly to ATT&CK technique T1021.002, which involves remote services and specifically addresses the exploitation of system vulnerabilities for unauthorized access. The security implications extend beyond simple information disclosure to encompass potential compromise of sensitive communications, personal data, and business confidential information that may be contained within email attachments. This vulnerability demonstrates the critical importance of proper implementation of security features and the dangers of misleading security claims in consumer operating systems.
Mitigation strategies for this vulnerability require immediate system updates to iOS version 7.1.2 or later, which address the underlying storage implementation issue. Users should also implement additional protective measures such as enabling strong device encryption, utilizing secure screen locks, and implementing mobile device management policies that enforce proper security configurations. Organizations should conduct comprehensive security assessments to identify devices running vulnerable iOS versions and ensure prompt remediation. The vulnerability also highlights the importance of proper security testing and validation of advertised security features to prevent similar implementation gaps in future software releases, emphasizing the need for thorough cryptographic implementation reviews and proper security architecture design.