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osvGoogleOSV:PYSEC-2023-128
HistoryJul 19, 2023 - 7:15 p.m.

PYSEC-2023-128

2023-07-1919:15:00
Google
osv.dev
6
flaw
keylime attestation verifier
faulty tpm quote
signature
error log
untrusted device

2.8 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

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.

2.8 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%