CVE-2024-29038 in tpm2-tools
Summary
by MITRE • 06/28/2024
tpm2-tools is the source repository for the Trusted Platform Module (TPM2.0) tools. A malicious attacker can generate arbitrary quote data which is not detected by `tpm2 checkquote`. This issue was patched in version 5.7.
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Analysis
by VulDB Data Team • 10/22/2025
The vulnerability identified as CVE-2024-29038 affects the tpm2-tools package, which serves as the primary source repository for Trusted Platform Module 2.0 tools used in hardware security implementations. This flaw resides within the TPM2.0 quote verification mechanism, specifically within the tpm2 checkquote command that is designed to validate the authenticity and integrity of TPM quotes generated by the platform. The vulnerability represents a critical weakness in the integrity checking process that is fundamental to TPM-based security architectures, where quote data serves as cryptographic proof of a system's state and configuration.
The technical flaw manifests as a failure in the quote validation logic that allows malicious actors to craft arbitrary quote data that bypasses the verification checks performed by tpm2 checkquote. This vulnerability stems from insufficient validation of the quote structure and content, enabling attackers to manipulate the quote fields in ways that would normally trigger detection mechanisms. The flaw specifically impacts the cryptographic verification routines that should ensure quote data originates from legitimate TPM hardware and has not been tampered with during generation or transmission. This represents a direct violation of the TPM 2.0 specification requirements for quote integrity and authenticity verification.
The operational impact of this vulnerability extends beyond simple security bypass to potentially compromise entire platform security models that rely on TPM quotes for attestation and integrity verification. Attackers could exploit this weakness to present false positive attestations, undermining the trust relationships that depend on TPM-based verification. This vulnerability affects systems that utilize TPM 2.0 for security-critical functions such as remote attestation, secure boot validation, and hardware-based identity verification. The implications are particularly severe in environments where TPM quotes are used for access control decisions, system integrity monitoring, or compliance verification, as malicious actors could bypass security policies and gain unauthorized access to protected resources.
The vulnerability is classified under CWE-290 authentication bypass weakness, specifically related to improper validation of authentication tokens and quote data. From an attack perspective, this flaw aligns with techniques described in the MITRE ATT&CK framework under T1552.001 for credentials from password storage devices and T1552.006 for unsecured credentials in code, as it allows attackers to manipulate security-critical data that should remain tamper-proof. The remediation involves upgrading to version 5.7 of the tpm2-tools package, which incorporates proper validation checks for quote data structures and ensures that arbitrary quote manipulation attempts are properly detected and rejected. Organizations should immediately assess their TPM-based security implementations and verify that all systems using tpm2 checkquote are updated to the patched version to maintain the integrity of their platform attestation processes.