CVE-2022-27570

Vulnerability

A heap-based buffer overflow vulnerability exists in the parser_single_iref function of the libsimba library used in Samsung mobile devices. Affected versions are those prior to the SMR Apr-2022 Release 1 security update. The vulnerability is triggered during parsing of specific input, likely involving a crafted IREF (index reference) chunk in an image or media file. No special configuration is required; the vulnerable code path is reachable through normal processing of such files.

Exploitation

An attacker can exploit this vulnerability remotely by delivering a specially crafted file (e.g., an image or media file) that, when processed by the vulnerable libsimba library, causes a heap buffer overflow. No authentication or user interaction beyond opening the file is required. The attacker does not need prior access to the device.

Impact

Successful exploitation allows the attacker to achieve arbitrary code execution on the affected device. The heap-based overflow can overwrite adjacent memory, enabling control flow hijacking. This results in full compromise of confidentiality, integrity, and availability at the privilege level of the vulnerable process.

Mitigation

The vulnerability is fixed in Samsung's SMR Apr-2022 Release 1 security update, released in April 2022 [1]. Users should update their device firmware to the latest version available. No workaround is possible without applying the patch. Devices that have reached end-of-life may not receive the update.