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Vulnerability DatabaseCVE-2021-25397

CVE-2021-25397: 
NixOS vulnerability analysis and mitigation

Overview

An improper access control vulnerability was discovered in Samsung's TelephonyUI application prior to SMR MAY-2021 Release 1. The vulnerability, tracked as CVE-2021-25397, allows local attackers to write arbitrary files of telephony process via untrusted applications (NVD, AttackerKB).

Technical details

The vulnerability exists in the receiver component com.samsung.android.app.telephonyui.carrierui.photoring.model.PhotoringReceiver, which is exported. The vulnerability allows attackers to save files from a specified URL to an arbitrary path. The only requirement for exploitation is that the content-type of the server response should be image/ or video/ (Oversecured Blog).

Impact

The vulnerability could allow attackers to overwrite the file storing SMS/MMS messages with malicious content, potentially leading to data manipulation and unauthorized access to sensitive information (Hacker News, Oversecured Blog).

Mitigation and workarounds

Samsung addressed this vulnerability in the SMR MAY-2021 Release 1 security update. Users are recommended to update their devices to the latest available firmware version to protect against this vulnerability (Samsung Mobile Security).

Additional resources

Source: This report was generated using AI

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