Vulnerability Description
libspdm is a sample implementation that follows the DMTF SPDM specifications. Prior to versions 2.3.3 and 3.0, following a successful CAPABILITIES response, a libspdm Requester stores the Responder's CTExponent into its context without validation. If the Requester sends a request message that requires a cryptography operation by the Responder, such as CHALLENGE, libspdm will calculate the timeout value using the Responder's unvalidated CTExponent. A patch is available in version 2.3.3. A workaround is also available. After completion of VCA, the Requester can check the value of the Responder's CTExponent. If it greater than or equal to 64, then the Requester can stop communication with the Responder.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dmtf | Libspdm | < 2.3.3 |
Related Weaknesses (CWE)
References
- https://github.com/DMTF/libspdm/issues/2068Patch
- https://github.com/DMTF/libspdm/pull/2069Patch
- https://github.com/DMTF/libspdm/security/advisories/GHSA-56h8-4gv5-jf2cVendor Advisory
- https://github.com/DMTF/libspdm/issues/2068Patch
- https://github.com/DMTF/libspdm/pull/2069Patch
- https://github.com/DMTF/libspdm/security/advisories/GHSA-56h8-4gv5-jf2cVendor Advisory
FAQ
What is CVE-2023-32690?
CVE-2023-32690 is a vulnerability with a CVSS score of 5.7 (MEDIUM). libspdm is a sample implementation that follows the DMTF SPDM specifications. Prior to versions 2.3.3 and 3.0, following a successful CAPABILITIES response, a libspdm Requester stores the Responder's ...
How severe is CVE-2023-32690?
CVE-2023-32690 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-32690?
Check the references section above for vendor advisories and patch information. Affected products include: Dmtf Libspdm.