CVE-2025-5963: The Postbox's configuration on macOS, specifically the presence of entitlements: "com.apple.security…
- Occurred
- Jun 20, 2025
- Published
- Jun 20, 2025
- Source
- NVD CVE
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.
Tags
- CVE
- CVE-2025-5963
Classification
Rationale: Vulnerability allows local code injection and TCC bypass, posing privacy risks but limited to granted permissions.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8