CVE-2023-3674 Keylime: attestation failure when the quote's signature does not validate

2023-07-1918:25:28

CWE-1283

redhat

github.com

cve-2023-3674

keylime

attestation failure

device

tpm quote

signature

faulty

error

log

untrusted

CVSS3

2.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

AI Score

6.5

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

A flaw was found in the keylime attestation verifier, which fails to flag a device’s submitted TPM quote as faulty when the quote’s signature does not validate for some reason. Instead, it will only emit an error in the log without flagging the device as untrusted.