Vulnerabilities > CVE-2022-34303
Attack vector
LOCAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A flaw was found in Eurosoft bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.
Vulnerable Configurations
References
- https://edk2-docs.gitbook.io/understanding-the-uefi-secure-boot-chain/secure_boot_chain_in_uefi/uefi_secure_boot
- https://edk2-docs.gitbook.io/understanding-the-uefi-secure-boot-chain/secure_boot_chain_in_uefi/uefi_secure_boot
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01001.html
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01001.html
- https://www.kb.cert.org/vuls/id/309662
- https://www.kb.cert.org/vuls/id/309662