CVE-2024-29040

Fapi Verify Quote: Does not detect if quote was not generated by TPM

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

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.

Este repositorio aloja el código fuente que implementa la pila de software (TSS) TPM2 de Trusted Computing Group (TCG). Fapi_VerifyQuote debe deserializar la información de cotización JSON devuelta por Fapi_Quote a la estructura TPM `TPMS_ATTEST`. Para el campo `TPM2_GENERATED magic` de esta estructura se puede utilizar cualquier número en la estructura JSON. El verificador puede recibir un estado que no representa el estado real, posiblemente malicioso, del dispositivo bajo prueba. El dispositivo malicioso puede obtener acceso a datos que no debería o puede utilizar servicios que no debería poder. Este problema se solucionó en la versión 4.1.0.

*Credits: N/A

CVSS Scores

GitHubv3.1 4.3

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

Poc

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-03-14 CVE Reserved
2024-05-30 CVE Published
2024-06-29 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (2)

URL	Tag	Source
https://github.com/tpm2-software/tpm2-tss/releases/tag/4.1.0	X_refsource_misc
https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-837m-jw3m-h9p6	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tpm2-software Search vendor "Tpm2-software"		Tpm2-tss Search vendor "Tpm2-software" for product "Tpm2-tss"				< 4.1.0 Search vendor "Tpm2-software" for product "Tpm2-tss" and version " < 4.1.0"		en		Affected