CVE-2024-29040: Insecure Deserialization (CVSS 4.3)

Description

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

References

Other References

https://github.com/tpm2-software/tpm2-tss/releases/tag/4.1.0 https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-837m-jw3m-h9p6 https://github.com/tpm2-software/tpm2-tss/releases/tag/4.1.0 https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-837m-jw3m-h9p6 https://lists.fedoraproject.org/archives/list/[email protected]/message/EFR7SVEWCOXORHPCLLGXEMHFMIGG2MFE/ https://lists.fedoraproject.org/archives/list/[email protected]/message/GI4JFEZBKQQUPJ4RWK6IHEWXAFCEJDPI/

Frequently Asked Questions

What is CVE-2024-29040? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2024-29040? +

CVE-2024-29040 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-29040? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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