CVE-2022-34301

Severity

67%

Complexity

8%

Confidentiality

98%

A flaw was found in CryptoPro Secure Disk 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.

CVSS 3.1 Base Score 6.7. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Overview

First reported 2 years ago

2022-08-26 18:15:00

Last updated 2 years ago

2022-09-01 19:13:00

Affected Software

Red Hat Enterprise Linux (RHEL) 7.0 (7)

7.0

Red Hat Enterprise Linux 8.0

8.0

Microsoft Windows Server 2016

Microsoft Windows RT 8.1

Microsoft Windows Server 2012

Microsoft Windows Server 2019

Microsoft Windows 10 1809

1809

References

https://edk2-docs.gitbook.io/understanding-the-uefi-secure-boot-chain/secure_boot_chain_in_uefi/uefi_secure_boot

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

Third Party Advisory

https://www.kb.cert.org/vuls/id/309662

Third Party Advisory, US Government Resource

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