Описание
tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In affected versions Tss2_RC_SetHandler and Tss2_RC_Decode both index into layer_handler with an 8 bit layer number, but the array only has TPM2_ERROR_TSS2_RC_LAYER_COUNT entries, so trying to add a handler for higher-numbered layers or decode a response code with such a layer number reads/writes past the end of the buffer. This Buffer overrun, could result in arbitrary code execution. An example attack would be a MiTM bus attack that returns 0xFFFFFFFF for the RC. Given the common use case of TPM modules an attacker must have local access to the target machine with local system privileges which allows access to the TPM system. Usually TPM access requires administrative privilege.
A flaw was found in tpm2-tss, which is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In affected versions, Tss2_RC_SetHandler and Tss2_RC_Decode index into the layer_handler with an 8-bit layer number, but the array only has TPM2_ERROR_TSS2_RC_LAYER_COUNT entries. Trying to add a handler for higher-numbered layers or to decode a response code with a layer number, reads/writes past the end of the buffer. This buffer overrun could result in arbitrary code execution. An example attack is a man-in-the-middle (MiTM) bus attack that returns 0xFFFFFFFFFF for the RC. Given the common use case of TPM modules, an attacker must have local access to the target machine with local system privileges, which allows access to the TPM system. Usually, TPM access requires administrative privileges.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 7 | tpm2-tss | Out of support scope | ||
| Red Hat Enterprise Linux 8 | tpm2-tss | Fixed | RHSA-2023:7166 | 14.11.2023 |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | tpm2-tss | Fixed | RHSA-2024:4408 | 09.07.2024 |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | tpm2-tss | Fixed | RHSA-2024:4408 | 09.07.2024 |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | tpm2-tss | Fixed | RHSA-2024:4408 | 09.07.2024 |
| Red Hat Enterprise Linux 8.8 Extended Update Support | tpm2-tss | Fixed | RHSA-2024:4739 | 23.07.2024 |
| Red Hat Enterprise Linux 9 | tpm2-tss | Fixed | RHSA-2023:6685 | 07.11.2023 |
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Дополнительная информация
Статус:
EPSS
6.4 Medium
CVSS3
Связанные уязвимости
tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In affected versions `Tss2_RC_SetHandler` and `Tss2_RC_Decode` both index into `layer_handler` with an 8 bit layer number, but the array only has `TPM2_ERROR_TSS2_RC_LAYER_COUNT` entries, so trying to add a handler for higher-numbered layers or decode a response code with such a layer number reads/writes past the end of the buffer. This Buffer overrun, could result in arbitrary code execution. An example attack would be a MiTM bus attack that returns 0xFFFFFFFF for the RC. Given the common use case of TPM modules an attacker must have local access to the target machine with local system privileges which allows access to the TPM system. Usually TPM access requires administrative privilege.
tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In affected versions `Tss2_RC_SetHandler` and `Tss2_RC_Decode` both index into `layer_handler` with an 8 bit layer number, but the array only has `TPM2_ERROR_TSS2_RC_LAYER_COUNT` entries, so trying to add a handler for higher-numbered layers or decode a response code with such a layer number reads/writes past the end of the buffer. This Buffer overrun, could result in arbitrary code execution. An example attack would be a MiTM bus attack that returns 0xFFFFFFFF for the RC. Given the common use case of TPM modules an attacker must have local access to the target machine with local system privileges which allows access to the TPM system. Usually TPM access requires administrative privilege.
tpm2-tss is an open source software implementation of the Trusted Comp ...
EPSS
6.4 Medium
CVSS3