CVE-2021-41289 : Exploit Details and Defense Strategies
Learn about CVE-2021-41289 affecting ASUS P453UJ BIOS, allowing local attackers to modify the system's BIOS, impacting integrity verification and boot process. Discover mitigation steps and long-term security practices.
ASUS P453UJ contains an Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability that allows local attackers to modify BIOS, affecting its integrity verification and boot process.
Understanding CVE-2021-41289
What is CVE-2021-41289?
ASUS P453UJ BIOS is prone to an Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability, enabling local attackers to tamper with BIOS content.
The Impact of CVE-2021-41289
The vulnerability results in a failure of integrity verification and a subsequent inability to boot the affected system. Attackers can exploit this issue with general user permissions.
Technical Details of CVE-2021-41289
Vulnerability Description
The vulnerability allows attackers to modify the BIOS by replacing or filling in the designated Memory DataBuffer, impacting integrity verification.
Affected Systems and Versions
- Product: P453UJ BIOS
- Vendor: ASUS
- Affected Version: 311
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Local
- Privileges Required: Low
- Availability Impact: High
- Integrity Impact: High
Mitigation and Prevention
Immediate Steps to Take
- Apply the provided ASUS P453UJ BIOS version 313 immediately.
- Monitor ASUS official support channels for further updates.
Long-Term Security Practices
- Regularly update BIOS versions to patch vulnerabilities.
- Implement BIOS security best practices to prevent unauthorized modifications.
Patching and Updates
It is crucial to keep BIOS up to date with the latest patches to mitigate known vulnerabilities and ensure system security.