#VU96646 Mutable Attestation or Measurement Reporting Data in tpm2-tools - CVE-2024-29038

Vulnerability identifier: #VU96646

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-29038

CWE-ID: CWE-1283

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
tpm2-tools
Other software / Other software solutions

Vendor: Linux TPM2 & TSS2 Software

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper input validation. A local user can generate arbitrary quote data which is not detected by tpm2 checkquote and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

tpm2-tools: 5.0, 5.1 - 5.1.1, 5.2, 5.3, 5.4, 5.5, 5.6

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External links
https://github.com/tpm2-software/tpm2-tools/security/advisories/GHSA-5495-c38w-gr6f
https://github.com/tpm2-software/tpm2-tools/releases/tag/5.7

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.