Vulnerability CVE-2022-34301 - CERT Civis.Net

Vulnerability Name:

CVE-2022-34301 (CCN-232127)

Assigned:

2022-08-09

Published:

2022-08-09

Updated:

2022-09-01

Summary:

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 v3 Severity:

6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

5.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N)
4.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

CVSS v2 Severity:

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:C/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Complete Availibility (A): None

Vulnerability Type:

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2022-34301

Source: CCN
Type: US-CERT VU#309662
Signed third party UEFI bootloaders are vulnerable to Secure Boot bypass

Source: MISC
Type: Third Party Advisory
https://edk2-docs.gitbook.io/understanding-the-uefi-secure-boot-chain/secure_boot_chain_in_uefi/uefi_secure_boot

Source: XF
Type: UNKNOWN
ms-windows-cve202234301-sec-bypass(232127)

Source: CCN
Type: Microsoft Security TechCenter - August 2022
CVE-2022-34301 - CERT/CC: CVE-2022-34301 Eurosoft Boot Loader Bypass

Source: MISC
Type: Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/309662

Source: CCN
Type: Mend Vulnerability Database
CVE-2022-34301

Vulnerable Configuration:

Configuration 1:

cpe:/o:kidan:cryptopro_securedisk_for_bitlocker:*:*:*:*:*:*:*:* (Version < 2022-06-01)

Configuration 2:

cpe:/o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

OR cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Configuration 3:

cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:20h2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:21h1:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:21h2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_11:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_20h2:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*

OR cpe:/o:microsoft:windows_8.1:::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10:::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1809::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10:1607::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:20h2:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server:20h2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:21h1:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_21h1:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_21h1:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server:2022:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server:2022:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_11_21h2:10.0.22000.739:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_11_21h2:10.0.22000.739:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*

Denotes that component is vulnerable