CVE-2023-22745
6.4 · MEDIUMOverview
CVE-2023-22745 is a medium-severity vulnerability affecting tpm2_software_stack_project tpm2_software_stack. It was published on January 19, 2023 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from tpm2_software_stack_project. Update tpm2_software_stack to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tpm2_software_stack_project | tpm2_software_stack | >= 0, < 3.2.2 | Affected |
References
Frequently Asked Questions
What is CVE-2023-22745?
CVE-2023-22745 is a medium-severity vulnerability affecting tpm2_software_stack_project tpm2_software_stack. It was published on January 19, 2023 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
How severe is CVE-2023-22745?
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-22745?
Check the references section for vendor advisories and patches from tpm2_software_stack_project. Update tpm2_software_stack to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-22745?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-22745 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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