CVE-2022-39908 : Security Advisory and Response
Learn about CVE-2022-39908, a TOCTOU vulnerability in Samsung decoding library for video thumbnails allowing local attackers to perform Out-Of-Bounds Write. Understand impact, affected systems, mitigation steps.
A TOCTOU vulnerability in Samsung decoding library for video thumbnails has been identified, allowing a local attacker to perform an Out-Of-Bounds Write.
Understanding CVE-2022-39908
This section provides detailed insights into the CVE-2022-39908 vulnerability.
What is CVE-2022-39908?
The CVE-2022-39908 involves a Time-of-check Time-of-use (TOCTOU) vulnerability in the Samsung decoding library used for video thumbnails generation. This vulnerability enables a local attacker to execute an Out-Of-Bounds Write operation.
The Impact of CVE-2022-39908
The impact of this vulnerability is rated as MEDIUM, with a base score of 6.9 according to the CVSS v3.1 scoring system. It can lead to high confidentiality and integrity impact, while the availability impact is low.
Technical Details of CVE-2022-39908
This section delves into the technical aspects of the CVE-2022-39908 vulnerability.
Vulnerability Description
The vulnerability arises due to a TOCTOU race condition in the decoding library, which could be exploited by a local attacker to write data out of the intended bounds.
Affected Systems and Versions
Samsung Mobile Devices running Q(10) and R(11) OS with libsadapter, as well as S(12) and T(13) OS with libsthmbcadapter, are affected. The issue persists in versions less than SMR Dec-22 Release 1.
Exploitation Mechanism
The exploitation of this vulnerability requires local access to the targeted device, allowing the attacker to manipulate the decoding library to perform Out-Of-Bounds Write actions.
Mitigation and Prevention
In order to mitigate the risks associated with CVE-2022-39908, certain preventive measures need to be taken.
Immediate Steps to Take
Users are advised to update their Samsung devices to SMR Dec-2022 Release 1 or later to address this vulnerability. Additionally, limiting local access to the device can help reduce the risk of exploitation.
Long-Term Security Practices
Practicing good security hygiene, such as avoiding untrusted applications and sources, can contribute to overall device security.
Patching and Updates
Regularly updating the device software and firmware can help patch existing vulnerabilities and protect against potential threats.