CVE-2024-42219 in 1Password
Summary
by MITRE • 08/07/2024
1Password 8 before 8.10.36 for macOS allows local attackers to exfiltrate vault items because XPC inter-process communication validation is insufficient.
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Analysis
by VulDB Data Team • 08/13/2024
The vulnerability identified as CVE-2024-42219 affects 1Password 8 versions prior to 8.10.36 on macOS platforms, representing a critical security flaw that enables local attackers to extract sensitive vault items through inadequate XPC inter-process communication validation mechanisms. This issue stems from insufficient input validation and access control enforcement within the application's communication framework, creating a pathway for unauthorized data exfiltration from the secure password management system.
The technical implementation of this vulnerability resides in the XPC (Cross-Process Communication) subsystem that 1Password utilizes for communication between different process components within the macOS environment. When 1Password 8 versions before 8.10.36 process incoming XPC messages, the validation logic fails to properly authenticate and authorize the source of these communications, allowing malicious local processes to forge legitimate XPC requests. This weakness specifically manifests when the application does not adequately verify the identity and permissions of processes attempting to interact with its secure vault components through the XPC interface.
The operational impact of this vulnerability extends beyond typical local privilege escalation scenarios as it directly compromises the core security promise of 1Password's vault protection mechanisms. Attackers with local access can exploit this flaw to extract stored passwords, sensitive personal information, and other confidential data from the password manager's secure repository without requiring additional authentication or bypassing the application's encryption layers. The vulnerability effectively undermines the fundamental security model that 1Password employs to protect user credentials and sensitive information, making it particularly concerning for users who rely on the application for managing critical digital assets.
This vulnerability aligns with CWE-284, which addresses inadequate access control in software systems, and represents a clear violation of the principle of least privilege in the application's inter-process communication design. From an ATT&CK framework perspective, this weakness maps to technique T1059.001 for command and script interpreter usage, as well as T1566 for phishing with social engineering, since attackers can leverage local access to compromise the security of the password manager itself. The vulnerability also demonstrates characteristics of T1070.004 related to indicator removal, as the compromised system may not immediately reveal evidence of unauthorized access to the vault items.
Organizations and individual users should immediately update to 1Password 8.10.36 or later versions to remediate this vulnerability, as the patch addresses the insufficient XPC validation by implementing proper authentication checks and access control enforcement. Additionally, system administrators should conduct thorough security assessments of their 1Password installations, monitor for unauthorized local access attempts, and consider implementing additional security controls such as file integrity monitoring and process monitoring to detect potential exploitation attempts. The vulnerability underscores the critical importance of proper input validation and access control in secure application design, particularly for security tools that handle sensitive user data and must maintain trust boundaries between different application components.