Описание
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.
Отчет
This vulnerability is rated as moderate because it allows an attacker to generate arbitrary quote data, potentially bypassing Fapi_VerifyQuote detection, but it requires specific conditions to be exploited.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | tpm2-tss | Not affected | ||
| Red Hat Enterprise Linux 7 | tpm2-tss | Out of support scope | ||
| Red Hat Enterprise Linux 8 | tpm2-tss | Not affected | ||
| Red Hat Enterprise Linux 9 | tpm2-tss | Affected |
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Дополнительная информация
Статус:
EPSS
4.4 Medium
CVSS3
Связанные уязвимости
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.
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.
This repository hosts source code implementing the Trusted Computing G ...
EPSS
4.4 Medium
CVSS3