Medium severity · published Aug 26, 2022
CVE-2022-34302
A flaw was found in New Horizon Datasys bootloaders before 2022-06-01
6.7
CVSS
1.1%
EPSS
No
On KEV
Description
A flaw was found in New Horizon Datasys 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 vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Windows · Microsoft
20h2; 21h1; 21h2; 1607; 1809 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0; 9.0 · source: NVD
UB
Uefi Bootloader · Horizondatasys
before 2022-06-01 · source: NVD
W8
Windows 8.1 · Microsoft
All versions, or not specified · source: NVD
WR
Windows RT 8.1 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2012 · Microsoft
r2 · source: NVD
WS
Windows Server 2016 · Microsoft
20h2 · source: NVD
WS
Windows Server 2019 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2022 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34302
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-34302
Third Party Advisory
https://edk2-docs.gitbook.io/understanding-the-uefi-secure-boot-chain/secure_boot_chain_in_uefi/uefi_secure_boot
www.intel.com
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01001.html
Third Party Advisory
https://www.kb.cert.org/vuls/id/309662
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