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    1 vulnerability by Postbox

    CVE-2025-5963 (GCVE-0-2025-5963)

    Vulnerability from cvelistv5 – Published: 2025-06-20 10:01 – Updated: 2025-06-20 13:14 Unsupported When Assigned
    VLAI
    Title
    TCC Bypass via Dylib Injection in Postbox
    Summary
    The Postbox's configuration on macOS, specifically the presence of entitlements: "com.apple.security.cs.allow-dyld-environment-variables" and "com.apple.security.cs.disable-library-validation" allows for Dynamic Library (Dylib) injection. A local attacker with unprivileged access can use environment variables like DYLD_INSERT_LIBRARIES to successfully inject code in application's context and bypass Transparency, Consent, and Control (TCC). Acquired resource access is limited to previously granted permissions by the user. Access to other resources beyond granted-permissions requires user interaction with a system prompt asking for permission. The original company behind Postbox is no longer operational, the software will no longer receive updates. The acquiring company (em Client) did not cooperate in vulnerability disclosure.
    Severity
    4.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-276 - Incorrect Default Permissions
    Assigner
    References
    Impacted products
    Vendor Product Version
    Postbox Postbox Affected: 7.0.65 (semver)
    		Create a notification for this product.
    Credits
    Karol Mazurek - Afine Team
    Show details on NVD website
    To clipboard 

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