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2 vulnerabilities by tpm2_software_stack_project

CVE-2023-22745 (GCVE-0-2023-22745)

Vulnerability from cvelistv5 – Published: 2023-01-19 22:12 – Updated: 2025-11-21 19:10
VLAI?
Summary
tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In versions prior to 4.1.0-rc0, 4.0.1, and 3.2.2-rc1, `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. Versions 4.1.0-rc0, 4.0.1, and 3.2.2-rc1 fix the issue.
Severity ?
6.4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version
tpm2-software tpm2-tss Affected: < 4.0.1
Affected: < 3.2.2-rc0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-24455 (GCVE-0-2020-24455)

Vulnerability from cvelistv5 – Published: 2021-02-26 02:55 – Updated: 2024-08-04 15:12
VLAI?
Summary
Missing initialization of a variable in the TPM2 source may allow a privileged user to potentially enable an escalation of privilege via local access. This affects tpm2-tss before 3.0.1 and before 2.4.3.
Severity ?
No CVSS data available.
CWE
  • escalation of privilege
Assigner
References
Impacted products
Vendor Product Version
n/a TPM2 source Affected: before 3.01, before 2.4.3
Show details on NVD website
To clipboard 

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