CVE-2024-29040 MEDIUM

CVE-2024-29040: Fapi Verify Quote: Does not detect if quote was not generated by TPM

Vendor Tpm2-Software
Product tpm2-tss
Weakness CWE-502 · Unsafe deserialization
Published June 28, 2024
Last update November 4, 2025
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

This repository hosts source code implementing the Trusted Computing Group's (TCG) TPM2 Software Stack (TSS). The JSON Quote Info returned by Fapi_Quote has to be deserialized by Fapi_VerifyQuote to the TPM Structure `TPMS_ATTEST`. For the field `TPM2_GENERATED magic` of this structure any number can be used in the JSON structure. The verifier can receive a state which does not represent the actual, possibly malicious state of the device under test. The malicious device might get access to data it shouldn't, or can use services it shouldn't be able to. This issue has been patched in version 4.1.0.

Key dates

02Disclosure timeline

June 28, 2024 CVE published
November 4, 2025 Record updated