CVE-2017-18661

Vulnerability

A buffer overflow vulnerability exists in the process_cipher_tdea function on Samsung mobile devices running Android M(6.0) and N(7.x). The issue was identified by Samsung as SVE-2017-8973 and disclosed in July 2017. The exact component and trigger conditions are not detailed in the available references, but the overflow occurs within the cipher processing routine.

Exploitation

An attacker would need to send specially crafted input to the vulnerable function. The required privileges and network position are not specified in the public description, but the overflow suggests that a local or remote attacker could potentially trigger the flaw if the function is exposed to untrusted data.

Impact

Successful exploitation could lead to memory corruption, potentially allowing an attacker to execute arbitrary code or cause a denial of service. The impact is limited to devices running the affected software versions.

Mitigation

Samsung has addressed this vulnerability in a security update released as part of its monthly maintenance. Users should update their devices to the latest firmware version provided by Samsung. No workaround is available for unpatched devices.