CVE-2021-25434 : Exploit Details and Defense Strategies
Learn about CVE-2021-25434, an input validation vulnerability in Tizen bootloader on Samsung Mobile Tizen wearable devices before Firmware update JUL-2021 Release, enabling arbitrary code execution.
A vulnerability has been identified in Tizen bootloader prior to the Firmware update JUL-2021 Release, affecting Tizen wearable devices by Samsung Mobile. This vulnerability could allow attackers to execute arbitrary code in wireless firmware download mode.
Understanding CVE-2021-25434
This CVE highlights an improper input validation vulnerability in Tizen bootloader, potentially leading to arbitrary code execution on the affected devices.
What is CVE-2021-25434?
The CVE-2021-25434 refers to an improper input validation vulnerability in Tizen bootloader before the Firmware update JUL-2021 Release, enabling threat actors to run arbitrary code via the param partition in wireless firmware download mode.
The Impact of CVE-2021-25434
The impact of this vulnerability is severe as it allows attackers to execute arbitrary code, compromising the security and integrity of Tizen wearable devices running Tizen 5.5 with versions before the JUL-2021 Release.
Technical Details of CVE-2021-25434
This section explores the detailed technical aspects of CVE-2021-25434 and how it affects the systems.
Vulnerability Description
The vulnerability arises from improper input validation in the Tizen bootloader, leading to arbitrary code execution using the param partition in wireless firmware download mode.
Affected Systems and Versions
Tizen wearable devices running Tizen 5.5 are impacted by this vulnerability, specifically versions before the Firmware update JUL-2021 Release.
Exploitation Mechanism
Threat actors can exploit this vulnerability by manipulating input parameters in wireless firmware download mode, allowing them to execute arbitrary code.
Mitigation and Prevention
To safeguard against CVE-2021-25434, immediate actions and long-term security practices are essential.
Immediate Steps to Take
Users are advised to update their Tizen wearable devices to the latest firmware version released in JUL-2021. Additionally, exercise caution while accessing wireless firmware download mode.
Long-Term Security Practices
Implementing strong access controls, regular security updates, and monitoring for suspicious activities can enhance the overall security posture.
Patching and Updates
Regularly check for firmware updates from Samsung Mobile and apply patches promptly to address known vulnerabilities and enhance device security.