medium6.7
CVE-2022-34303
A flaw was found in Eurosoft bootloaders before 2022-06-01.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Eurosoft-Uk | Uefi Bootloader | before 2022-06-01 |
| Redhat | Enterprise Linux | Versions 7.0, 8.0, 9.0 |
| Microsoft | Windows 10 | All versions Versions 20h2, 21h1, 21h2, 1607, 1809 |
| Microsoft | Windows 11 | All versions |
| Microsoft | Windows 8.1 | All versions |
| Microsoft | Windows Rt 8.1 | All versions |
| Microsoft | Windows Server 2012 | All versions Version r2 |
| Microsoft | Windows Server 2016 | All versions Version 20h2 |
| Microsoft | Windows Server 2019 | All versions |
| Microsoft | Windows Server 2022 | All versions |
References
- NVD record
- CVE.org record
- 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.kb.cert.org/vuls/id/309662
- 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.kb.cert.org/vuls/id/309662