8.2 CVE-2024-7344

Patch Exploit

Howyar UEFI Application "Reloader" (32-bit and 64-bit) is vulnerable to execution of unsigned software in a hardcoded path.
https://nvd.nist.gov/vuln/detail/CVE-2024-7344

Categories

CWE-347 : Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data. Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.) Does not properly verify signatures for "trusted" entities. Insufficient verification allows spoofing. Insufficient verification allows spoofing. Accepts a configuration file without a Message Integrity Check (MIC) signature.

References

134c704f-9b21-4f2e-91b3-4a467353bcc0 Exploit

https://www.kb.cert.org/vuls/id/529659 Third Party Advisory US Government Resource
https://www.welivesecurity.com/en/eset-research/under-cloak-uefi-secure-boot-... Exploit Mitigation Third Party Advisory

af854a3a-2127-422b-91ae-364da2661108 Exploit

https://www.kb.cert.org/vuls/id/529659 Third Party Advisory US Government Resource

cret@cert.org Patch Exploit

https://uefi.org/revocationlistfile Patch
https://uefi.org/specs/UEFI/2.10/03_Boot_Manager.html Related
https://uefi.org/specs/UEFI/2.10/32_Secure_Boot_and_Driver_Signing.html Related
https://www.eset.com/blog/enterprise/preparing-for-uefi-bootkits-eset-discove... Related

CPE

cpe	start	end
Configuration 1
cpe:2.3:a:cs-grp:neo_impact::::::::		< 10.1.024-20241127
cpe:2.3:a:greenware:greenguard::::::::		< 10.2.023-20240927
cpe:2.3:a:howyar:sysreturn::::::::		< 10.2.023_20240919
cpe:2.3:a:radix:smart_recovery::::::::		< 11.2.023-20240927
cpe:2.3:a:sanfong:ez-back_system::::::::		< 10.3.024-20241127
cpe:2.3:a:signalcomputer:hdd_king::::::::		< 10.3.021-20241127
cpe:2.3:a:wasay:erecoveryrx::::::::		< 8.4.022-20241127

REMEDIATION

Patch

Url
https://uefi.org/revocationlistfile

EXPLOITS

Exploit-db.com

id	description	date
No known exploits

POC Github

Url
No known exploits

Other Nist (github, ...)

Url
https://www.welivesecurity.com/en/eset-research/under-cloak-uefi-secure-boot-...

CAPEC

Common Attack Pattern Enumerations and Classifications

id	description	severity
463	Padding Oracle Crypto Attack An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.	High
475	Signature Spoofing by Improper Validation An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.	High

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