vulnerability

Amazon Linux 2023: CVE-2024-29040: Medium priority package update for tpm2-tss

Severity
3
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:N)
Published
Apr 30, 2024
Added
Feb 17, 2025
Modified
Jul 9, 2025

Description

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.
A flaw was found in the tpm2-tss package, where it was not checked to see if the magic number in the attest is equal to the TPM2_GENERATED_VALUE. This flaw allows an attacker to generate arbitrary quote data, which may not be detected by Fapi_VerifyQuote.

Solutions

amazon-linux-2023-upgrade-tpm2-tssamazon-linux-2023-upgrade-tpm2-tss-debuginfoamazon-linux-2023-upgrade-tpm2-tss-debugsourceamazon-linux-2023-upgrade-tpm2-tss-develamazon-linux-2023-upgrade-tpm2-tss-fapiamazon-linux-2023-upgrade-tpm2-tss-fapi-debuginfo
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